12951397516 has 12 divisors (see below), whose sum is σ = 22843410688. Its totient is φ = 6424708752.

The previous prime is 12951397507. The next prime is 12951397531. The reversal of 12951397516 is 61579315921.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12951397516.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12746931 + ... + 12747946.

Almost surely, 2^12951397516 is an apocalyptic number.

It is an amenable number.

12951397516 is a deficient number, since it is larger than the sum of its proper divisors (9892013172).

12951397516 is a wasteful number, since it uses less digits than its factorization.

12951397516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25495008 (or 25495006 counting only the distinct ones).

The product of its digits is 510300, while the sum is 49.

The spelling of 12951397516 in words is "twelve billion, nine hundred fifty-one million, three hundred ninety-seven thousand, five hundred sixteen".