12972351508 has 12 divisors (see below), whose sum is σ = 22702426740. Its totient is φ = 6485943872.

The previous prime is 12972351503. The next prime is 12972351541. The reversal of 12972351508 is 80515327921.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5970343824 + 7002007684 = 77268^2 + 83678^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12972351503) 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, 154110 + ... + 222922.

It is an arithmetic number, because the mean of its divisors is an integer number (1891868895).

Almost surely, 2^12972351508 is an apocalyptic number.

It is an amenable number.

12972351508 is a deficient number, since it is larger than the sum of its proper divisors (9730075232).

12972351508 is a wasteful number, since it uses less digits than its factorization.

12972351508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115946 (or 115944 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 43.

The spelling of 12972351508 in words is "twelve billion, nine hundred seventy-two million, three hundred fifty-one thousand, five hundred eight".