85631994057 has 16 divisors (see below), whose sum is σ = 120913152192. Its totient is φ = 53720578560.

The previous prime is 85631994047. The next prime is 85631994113. The reversal of 85631994057 is 75049913658.

It is not a de Polignac number, because 85631994057 - 2⁸ = 85631993801 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85631993988 and 85631994006.

It is not an unprimeable number, because it can be changed into a prime (85631994017) 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, 158382 + ... + 443112.

It is an arithmetic number, because the mean of its divisors is an integer number (7557072012).

Almost surely, 2^85631994057 is an apocalyptic number.

It is an amenable number.

85631994057 is a deficient number, since it is larger than the sum of its proper divisors (35281158135).

85631994057 is a wasteful number, since it uses less digits than its factorization.

85631994057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290648.

The product of its (nonzero) digits is 8164800, while the sum is 57.

The spelling of 85631994057 in words is "eighty-five billion, six hundred thirty-one million, nine hundred ninety-four thousand, fifty-seven".