12450812157 has 128 divisors (see below), whose sum is σ = 23357030400. Its totient is φ = 6391078848.

The previous prime is 12450812149. The next prime is 12450812173. The reversal of 12450812157 is 75121805421.

It is a happy number.

12450812157 is a `hidden beast` number, since 1 + 24 + 508 + 121 + 5 + 7 = 666.

It is not a de Polignac number, because 12450812157 - 2³ = 12450812149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12450812117) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 10488718 + ... + 10489904.

It is an arithmetic number, because the mean of its divisors is an integer number (182476800).

Almost surely, 2^12450812157 is an apocalyptic number.

It is an amenable number.

12450812157 is a deficient number, since it is larger than the sum of its proper divisors (10906218243).

12450812157 is a wasteful number, since it uses less digits than its factorization.

12450812157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372 (or 1366 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The spelling of 12450812157 in words is "twelve billion, four hundred fifty million, eight hundred twelve thousand, one hundred fifty-seven".