12975720651 has 12 divisors (see below), whose sum is σ = 18743707528. Its totient is φ = 8650018944.

The previous prime is 12975720617. The next prime is 12975720697. The reversal of 12975720651 is 15602757921.

12975720651 is a `hidden beast` number, since 1 + 29 + 7 + 572 + 0 + 6 + 51 = 666.

It is not a de Polignac number, because 12975720651 - 2⁷ = 12975720523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12975720597 and 12975720606.

It is not an unprimeable number, because it can be changed into a prime (12975720151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 268896 + ... + 313458.

Almost surely, 2^12975720651 is an apocalyptic number.

12975720651 is a deficient number, since it is larger than the sum of its proper divisors (5767986877).

12975720651 is a wasteful number, since it uses less digits than its factorization.

12975720651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76922 (or 76919 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 45.

The spelling of 12975720651 in words is "twelve billion, nine hundred seventy-five million, seven hundred twenty thousand, six hundred fifty-one".