12951997963 has 16 divisors (see below), whose sum is σ = 13570943040. Its totient is φ = 12349725696.

The previous prime is 12951997937. The next prime is 12951997967. The reversal of 12951997963 is 36979915921.

It is a cyclic number.

It is not a de Polignac number, because 12951997963 - 2⁵ = 12951997931 is a prime.

It is a super-2 number, since 2×12951997963² (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 (12951997967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 354706 + ... + 389512.

It is an arithmetic number, because the mean of its divisors is an integer number (848183940).

Almost surely, 2^12951997963 is an apocalyptic number.

12951997963 is a deficient number, since it is larger than the sum of its proper divisors (618945077).

12951997963 is a wasteful number, since it uses less digits than its factorization.

12951997963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35046.

The product of its digits is 8266860, while the sum is 61.

The spelling of 12951997963 in words is "twelve billion, nine hundred fifty-one million, nine hundred ninety-seven thousand, nine hundred sixty-three".