Search a number
-
+
2121234567676 = 227671702166431
BaseRepresentation
bin11110110111100011011…
…011101101000111111100
321111210021111001222221021
4132313203123231013330
5234223242022131201
64302252014313524
7306153112220110
oct36674333550774
97453244058837
102121234567676
11748679681974
122a31391b88a4
13125054456c53
147494db63740
153a2a154aea1
hex1ede36ed1fc

2121234567676 has 48 divisors (see below), whose sum is σ = 4306107359232. Its totient is φ = 895465771200.

The previous prime is 2121234567671. The next prime is 2121234567691. The reversal of 2121234567676 is 6767654321212.

2121234567676 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a super-2 number, since 2×21212345676762 (a number of 25 digits) contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a pancake number, because a pancake can be divided into 2121234567676 parts by 2059725 straight cuts.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121234567671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31898181 + ... + 31964611.

It is an arithmetic number, because the mean of its divisors is an integer number (89710569984).

Almost surely, 22121234567676 is an apocalyptic number.

It is an amenable number.

2121234567676 is an abundant number, since it is smaller than the sum of its proper divisors (2184872791556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121234567676 is a wasteful number, since it uses less digits than its factorization.

2121234567676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83530 (or 83528 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 52.

Adding to 2121234567676 its reverse (6767654321212), we get a palindrome (8888888888888).

The spelling of 2121234567676 in words is "two trillion, one hundred twenty-one billion, two hundred thirty-four million, five hundred sixty-seven thousand, six hundred seventy-six".

Divisors: 1 2 4 7 14 28 67 134 268 469 938 1876 17021 34042 66431 68084 119147 132862 238294 265724 465017 476588 930034 1140407 1860068 2280814 4450877 4561628 7982849 8901754 15965698 17803508 31156139 31931396 62312278 124624556 1130722051 2261444102 4522888204 7915054357 15830108714 31660217428 75758377417 151516754834 303033509668 530308641919 1060617283838 2121234567676