12115672051 has 4 divisors (see below), whose sum is σ = 13846482352. Its totient is φ = 10384861752.

The previous prime is 12115672021. The next prime is 12115672057. The reversal of 12115672051 is 15027651121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12115672051 - 2⁹ = 12115671539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12115672057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 865405140 + ... + 865405153.

It is an arithmetic number, because the mean of its divisors is an integer number (3461620588).

Almost surely, 2^12115672051 is an apocalyptic number.

12115672051 is a deficient number, since it is larger than the sum of its proper divisors (1730810301).

12115672051 is an equidigital number, since it uses as much as digits as its factorization.

12115672051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730810300.

The product of its (nonzero) digits is 4200, while the sum is 31.

The spelling of 12115672051 in words is "twelve billion, one hundred fifteen million, six hundred seventy-two thousand, fifty-one".