12158788257 has 80 divisors (see below), whose sum is σ = 22697106432. Its totient is φ = 6301709280.

The previous prime is 12158788193. The next prime is 12158788277. The reversal of 12158788257 is 75288785121.

12158788257 is a `hidden beast` number, since 1 + 2 + 1 + 587 + 8 + 8 + 2 + 57 = 666.

It is not a de Polignac number, because 12158788257 - 2⁶ = 12158788193 is a prime.

It is a super-2 number, since 2×12158788257² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12158788277) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3035418 + ... + 3039420.

Almost surely, 2^12158788257 is an apocalyptic number.

It is an amenable number.

12158788257 is a deficient number, since it is larger than the sum of its proper divisors (10538318175).

12158788257 is a wasteful number, since it uses less digits than its factorization.

12158788257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4520 (or 4511 counting only the distinct ones).

The product of its digits is 2508800, while the sum is 54.

The spelling of 12158788257 in words is "twelve billion, one hundred fifty-eight million, seven hundred eighty-eight thousand, two hundred fifty-seven".