12973739408 has 60 divisors (see below), whose sum is σ = 29792362140. Its totient is φ = 5455247616.

The previous prime is 12973739369. The next prime is 12973739437. The reversal of 12973739408 is 80493737921.

It can be written as a sum of positive squares in 2 ways, for example, as 8829985024 + 4143754384 = 93968^2 + 64372^2 .

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a self number, because there is not a number n which added to its sum of digits gives 12973739408.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114563 + ... + 197666.

It is an arithmetic number, because the mean of its divisors is an integer number (496539369).

Almost surely, 2^12973739408 is an apocalyptic number.

It is an amenable number.

12973739408 is an abundant number, since it is smaller than the sum of its proper divisors (16818622732).

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

12973739408 is a wasteful number, since it uses less digits than its factorization.

12973739408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312304 (or 312291 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 53.

The spelling of 12973739408 in words is "twelve billion, nine hundred seventy-three million, seven hundred thirty-nine thousand, four hundred eight".