68507706331 has 8 divisors (see below), whose sum is σ = 69973254144. Its totient is φ = 67042489320.

The previous prime is 68507706287. The next prime is 68507706361. The reversal of 68507706331 is 13360770586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68507706331 - 2²⁵ = 68474151899 is a prime.

It is a super-2 number, since 2×68507706331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68507706361) 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, 361116 + ... + 517126.

It is an arithmetic number, because the mean of its divisors is an integer number (8746656768).

Almost surely, 2^68507706331 is an apocalyptic number.

68507706331 is a deficient number, since it is larger than the sum of its proper divisors (1465547813).

68507706331 is a wasteful number, since it uses less digits than its factorization.

68507706331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165401.

The product of its (nonzero) digits is 635040, while the sum is 46.

The spelling of 68507706331 in words is "sixty-eight billion, five hundred seven million, seven hundred six thousand, three hundred thirty-one".