85440866862 has 32 divisors (see below), whose sum is σ = 188514940320. Its totient is φ = 25648289280.

The previous prime is 85440866827. The next prime is 85440866879. The reversal of 85440866862 is 26866804458.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13355287 + ... + 13361682.

It is an arithmetic number, because the mean of its divisors is an integer number (5891091885).

Almost surely, 2^85440866862 is an apocalyptic number.

85440866862 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

85440866862 is an abundant number, since it is smaller than the sum of its proper divisors (103074073458).

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

85440866862 is a wasteful number, since it uses less digits than its factorization.

85440866862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26717028.

The product of its (nonzero) digits is 17694720, while the sum is 57.

The spelling of 85440866862 in words is "eighty-five billion, four hundred forty million, eight hundred sixty-six thousand, eight hundred sixty-two".