68532160631 has 4 divisors (see below), whose sum is σ = 74762357064. Its totient is φ = 62301964200.

The previous prime is 68532160621. The next prime is 68532160687. The reversal of 68532160631 is 13606123586.

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 68532160631 - 2¹⁰ = 68532159607 is a prime.

It is a super-2 number, since 2×68532160631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68532160601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3115098200 + ... + 3115098221.

It is an arithmetic number, because the mean of its divisors is an integer number (18690589266).

Almost surely, 2^68532160631 is an apocalyptic number.

68532160631 is a deficient number, since it is larger than the sum of its proper divisors (6230196433).

68532160631 is a wasteful number, since it uses less digits than its factorization.

68532160631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6230196432.

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 68532160631 in words is "sixty-eight billion, five hundred thirty-two million, one hundred sixty thousand, six hundred thirty-one".