85912457136 has 80 divisors (see below), whose sum is σ = 243156401280. Its totient is φ = 25922306560.

The previous prime is 85912457131. The next prime is 85912457143. The reversal of 85912457136 is 63175421958.

It is a super-2 number, since 2×85912457136² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85912457131) 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, 226146 + ... + 472193.

It is an arithmetic number, because the mean of its divisors is an integer number (3039455016).

Almost surely, 2^85912457136 is an apocalyptic number.

It is an amenable number.

85912457136 is an abundant number, since it is smaller than the sum of its proper divisors (157243944144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85912457136 is a wasteful number, since it uses less digits than its factorization.

85912457136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698594 (or 698588 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 51.

The spelling of 85912457136 in words is "eighty-five billion, nine hundred twelve million, four hundred fifty-seven thousand, one hundred thirty-six".