864158712156 has 72 divisors (see below), whose sum is σ = 2265561252864. Its totient is φ = 288020311920.

The previous prime is 864158712113. The next prime is 864158712163. The reversal of 864158712156 is 651217851468.

864158712156 is a `hidden beast` number, since 8 + 6 + 4 + 1 + 587 + 1 + 2 + 1 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 9471451 + ... + 9562253.

It is an arithmetic number, because the mean of its divisors is an integer number (31466128512).

Almost surely, 2^864158712156 is an apocalyptic number.

It is an amenable number.

864158712156 is an abundant number, since it is smaller than the sum of its proper divisors (1401402540708).

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

864158712156 is a wasteful number, since it uses less digits than its factorization.

864158712156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100613 (or 100599 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 54.

The spelling of 864158712156 in words is "eight hundred sixty-four billion, one hundred fifty-eight million, seven hundred twelve thousand, one hundred fifty-six".