Search a number
-
+
68610419371 = 135277724567
BaseRepresentation
bin111111111001011111…
…111110101010101011
320120002120121102121101
4333321133332222223
52111003231404441
651304051222231
74646141641114
oct777137765253
9216076542541
1068610419371
112710887a62a
12113695a7977
1366155a65b0
14346c25720b
151bb8628231
hexff97feaab

68610419371 has 4 divisors (see below), whose sum is σ = 73888143952. Its totient is φ = 63332694792.

The previous prime is 68610419369. The next prime is 68610419377. The reversal of 68610419371 is 17391401686.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68610419371 - 21 = 68610419369 is a prime.

It is a super-3 number, since 3×686104193713 (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68610419377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2638862271 + ... + 2638862296.

It is an arithmetic number, because the mean of its divisors is an integer number (18472035988).

Almost surely, 268610419371 is an apocalyptic number.

68610419371 is a deficient number, since it is larger than the sum of its proper divisors (5277724581).

68610419371 is a wasteful number, since it uses less digits than its factorization.

68610419371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5277724580.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 68610419371 in words is "sixty-eight billion, six hundred ten million, four hundred nineteen thousand, three hundred seventy-one".

Divisors: 1 13 5277724567 68610419371