85688055631 has 16 divisors (see below), whose sum is σ = 89055308160. Its totient is φ = 82349134560.

The previous prime is 85688055623. The next prime is 85688055641. The reversal of 85688055631 is 13655088658.

It is a cyclic number.

It is not a de Polignac number, because 85688055631 - 2³ = 85688055623 is a prime.

It is a super-2 number, since 2×85688055631² (a number of 23 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 (85688055611) 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, 6165216 + ... + 6179098.

It is an arithmetic number, because the mean of its divisors is an integer number (5565956760).

Almost surely, 2^85688055631 is an apocalyptic number.

85688055631 is a deficient number, since it is larger than the sum of its proper divisors (3367252529).

85688055631 is a wasteful number, since it uses less digits than its factorization.

85688055631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14886.

The product of its (nonzero) digits is 6912000, while the sum is 55.

The spelling of 85688055631 in words is "eighty-five billion, six hundred eighty-eight million, fifty-five thousand, six hundred thirty-one".