158197538256 has 80 divisors (see below), whose sum is σ = 430312934400. Its totient is φ = 49942410624.

The previous prime is 158197538227. The next prime is 158197538273. The reversal of 158197538256 is 652835791851.

It is a super-2 number, since 2×158197538256² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 158197538256.

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, 3313305 + ... + 3360711.

It is an arithmetic number, because the mean of its divisors is an integer number (5378911680).

Almost surely, 2^158197538256 is an apocalyptic number.

158197538256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

158197538256 is an abundant number, since it is smaller than the sum of its proper divisors (272115396144).

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

158197538256 is a wasteful number, since it uses less digits than its factorization.

158197538256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51096 (or 51090 counting only the distinct ones).

The product of its digits is 18144000, while the sum is 60.

The spelling of 158197538256 in words is "one hundred fifty-eight billion, one hundred ninety-seven million, five hundred thirty-eight thousand, two hundred fifty-six".