12971603408 has 20 divisors (see below), whose sum is σ = 25195799940. Its totient is φ = 6469461504.

The previous prime is 12971603383. The next prime is 12971603419. The reversal of 12971603408 is 80430617921.

It can be written as a sum of positive squares in 2 ways, for example, as 9372563344 + 3599040064 = 96812^2 + 59992^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 1014713 + ... + 1027416.

It is an arithmetic number, because the mean of its divisors is an integer number (1259789997).

Almost surely, 2^12971603408 is an apocalyptic number.

It is an amenable number.

12971603408 is a deficient number, since it is larger than the sum of its proper divisors (12224196532).

12971603408 is a wasteful number, since it uses less digits than its factorization.

12971603408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042534 (or 2042528 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The spelling of 12971603408 in words is "twelve billion, nine hundred seventy-one million, six hundred three thousand, four hundred eight".