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212511441270 = 2357083714709
BaseRepresentation
bin1100010111101010101…
…0110100000101110110
3202022112021202202101010
43011322222310011312
511440210412110040
6241343145413050
721232142306112
oct3057252640566
9668467682333
10212511441270
1182142194207
123522979a186
131706941366b
14a3dd9d2742
1557dba6ce80
hex317aab4176

212511441270 has 16 divisors (see below), whose sum is σ = 510027459120. Its totient is φ = 56669717664.

The previous prime is 212511441253. The next prime is 212511441271. The reversal of 212511441270 is 72144115212.

It is a super-2 number, since 2×2125114412702 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 7083714709 = 212511441270 / (2 + 1 + 2 + 5 + 1 + 1 + 4 + 4 + 1 + 2 + 7 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212511441271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3541857325 + ... + 3541857384.

It is an arithmetic number, because the mean of its divisors is an integer number (31876716195).

Almost surely, 2212511441270 is an apocalyptic number.

212511441270 is an abundant number, since it is smaller than the sum of its proper divisors (297516017850).

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

212511441270 is a wasteful number, since it uses less digits than its factorization.

212511441270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7083714719.

The product of its (nonzero) digits is 4480, while the sum is 30.

Adding to 212511441270 its reverse (72144115212), we get a palindrome (284655556482).

The spelling of 212511441270 in words is "two hundred twelve billion, five hundred eleven million, four hundred forty-one thousand, two hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 7083714709 14167429418 21251144127 35418573545 42502288254 70837147090 106255720635 212511441270