12130615251 has 24 divisors (see below), whose sum is σ = 18633775680. Its totient is φ = 7578107136.

The previous prime is 12130615247. The next prime is 12130615283. The reversal of 12130615251 is 15251603121.

12130615251 is a `hidden beast` number, since 1 + 2 + 130 + 6 + 1 + 525 + 1 = 666.

It is not a de Polignac number, because 12130615251 - 2² = 12130615247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12130615051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 138075 + ... + 208148.

It is an arithmetic number, because the mean of its divisors is an integer number (776407320).

Almost surely, 2^12130615251 is an apocalyptic number.

12130615251 is a deficient number, since it is larger than the sum of its proper divisors (6503160429).

12130615251 is a wasteful number, since it uses less digits than its factorization.

12130615251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346475 (or 346472 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The spelling of 12130615251 in words is "twelve billion, one hundred thirty million, six hundred fifteen thousand, two hundred fifty-one".