865457464536 has 96 divisors (see below), whose sum is σ = 2778011658240. Its totient is φ = 247273557408.

The previous prime is 865457464439. The next prime is 865457464579. The reversal of 865457464536 is 635464754568.

865457464536 is a `hidden beast` number, since 8 + 6 + 5 + 4 + 57 + 46 + 4 + 536 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31785976 + ... + 31813191.

It is an arithmetic number, because the mean of its divisors is an integer number (28937621440).

Almost surely, 2^865457464536 is an apocalyptic number.

It is an amenable number.

865457464536 is an abundant number, since it is smaller than the sum of its proper divisors (1912554193704).

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

865457464536 is a wasteful number, since it uses less digits than its factorization.

865457464536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63599195 (or 63599179 counting only the distinct ones).

The product of its digits is 290304000, while the sum is 63.

The spelling of 865457464536 in words is "eight hundred sixty-five billion, four hundred fifty-seven million, four hundred sixty-four thousand, five hundred thirty-six".