12158788256 has 48 divisors (see below), whose sum is σ = 26010351360. Its totient is φ = 5573629440.

The previous prime is 12158788193. The next prime is 12158788277. The reversal of 12158788256 is 65288785121.

It is a super-2 number, since 2×12158788256² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12158788198 and 12158788207.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303701 + ... + 341396.

It is an arithmetic number, because the mean of its divisors is an integer number (541882320).

Almost surely, 2^12158788256 is an apocalyptic number.

12158788256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12158788256 is an abundant number, since it is smaller than the sum of its proper divisors (13851563104).

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

12158788256 is a wasteful number, since it uses less digits than its factorization.

12158788256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645157 (or 645149 counting only the distinct ones).

The product of its digits is 2150400, while the sum is 53.

The spelling of 12158788256 in words is "twelve billion, one hundred fifty-eight million, seven hundred eighty-eight thousand, two hundred fifty-six".