12157382157 has 8 divisors (see below), whose sum is σ = 16515689184. Its totient is φ = 7951998288.

The previous prime is 12157382143. The next prime is 12157382179. The reversal of 12157382157 is 75128375121.

12157382157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12157382157 - 2⁶ = 12157382093 is a prime.

It is a super-2 number, since 2×12157382157² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12157382137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38230603 + ... + 38230920.

It is an arithmetic number, because the mean of its divisors is an integer number (2064461148).

Almost surely, 2^12157382157 is an apocalyptic number.

It is an amenable number.

12157382157 is a deficient number, since it is larger than the sum of its proper divisors (4358307027).

12157382157 is an equidigital number, since it uses as much as digits as its factorization.

12157382157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76461579.

The product of its digits is 117600, while the sum is 42.

The spelling of 12157382157 in words is "twelve billion, one hundred fifty-seven million, three hundred eighty-two thousand, one hundred fifty-seven".