12951631016 has 64 divisors (see below), whose sum is σ = 27132796800. Its totient is φ = 5764261888.

The previous prime is 12951631013. The next prime is 12951631057. The reversal of 12951631016 is 61013615921.

It is a super-2 number, since 2×12951631016² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12951631013) 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, 255131 + ... + 301653.

It is an arithmetic number, because the mean of its divisors is an integer number (423949950).

Almost surely, 2^12951631016 is an apocalyptic number.

It is an amenable number.

12951631016 is an abundant number, since it is smaller than the sum of its proper divisors (14181165784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12951631016 is a wasteful number, since it uses less digits than its factorization.

12951631016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46658 (or 46654 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 35.

The spelling of 12951631016 in words is "twelve billion, nine hundred fifty-one million, six hundred thirty-one thousand, sixteen".