12697928051 has 4 divisors (see below), whose sum is σ = 12698158992. Its totient is φ = 12697697112.

The previous prime is 12697928029. The next prime is 12697928059. The reversal of 12697928051 is 15082979621.

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 12697928051 - 2¹⁸ = 12697665907 is a prime.

It is a super-2 number, since 2×12697928051² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12697928059) 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, 19925 + ... + 160601.

It is an arithmetic number, because the mean of its divisors is an integer number (3174539748).

Almost surely, 2^12697928051 is an apocalyptic number.

12697928051 is a deficient number, since it is larger than the sum of its proper divisors (230941).

12697928051 is an equidigital number, since it uses as much as digits as its factorization.

12697928051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230940.

The product of its (nonzero) digits is 544320, while the sum is 50.

The spelling of 12697928051 in words is "twelve billion, six hundred ninety-seven million, nine hundred twenty-eight thousand, fifty-one".