85865507800458 has 64 divisors (see below), whose sum is σ = 182427222816000. Its totient is φ = 26888119892480.

The previous prime is 85865507800441. The next prime is 85865507800487. The reversal of 85865507800458 is 85400870556858.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 85865507800392 and 85865507800401.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21630273 + ... + 25290308.

It is an arithmetic number, because the mean of its divisors is an integer number (2850425356500).

Almost surely, 2^{85865507800458} is an apocalyptic number.

85865507800458 is an abundant number, since it is smaller than the sum of its proper divisors (96561715015542).

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

85865507800458 is a wasteful number, since it uses less digits than its factorization.

85865507800458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46920847.

The product of its (nonzero) digits is 430080000, while the sum is 69.

The spelling of 85865507800458 in words is "eighty-five trillion, eight hundred sixty-five billion, five hundred seven million, eight hundred thousand, four hundred fifty-eight".