12937308447 has 24 divisors (see below), whose sum is σ = 20122954416. Its totient is φ = 7371775488.

The previous prime is 12937308443. The next prime is 12937308491. The reversal of 12937308447 is 74480373921.

It is not a de Polignac number, because 12937308447 - 2² = 12937308443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12937308396 and 12937308405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12937308443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72768 + ... + 176549.

It is an arithmetic number, because the mean of its divisors is an integer number (838456434).

Almost surely, 2^12937308447 is an apocalyptic number.

12937308447 is a deficient number, since it is larger than the sum of its proper divisors (7185645969).

12937308447 is a wasteful number, since it uses less digits than its factorization.

12937308447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249687 (or 249680 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 48.

The spelling of 12937308447 in words is "twelve billion, nine hundred thirty-seven million, three hundred eight thousand, four hundred forty-seven".