12973665604 has 9 divisors (see below), whose sum is σ = 22704313471. Its totient is φ = 6486718900.

The previous prime is 12973665587. The next prime is 12973665611. The reversal of 12973665604 is 40656637921.

It is a happy number.

The square root of 12973665604 is 113902.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 199329 + ... + 256279.

Almost surely, 2^12973665604 is an apocalyptic number.

12973665604 is the 113902-nd square number.

It is an amenable number.

12973665604 is a deficient number, since it is larger than the sum of its proper divisors (9730647867).

12973665604 is an frugal number, since it uses more digits than its factorization.

12973665604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113906 (or 56953 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 49.

Multiplying 12973665604 by its sum of digits (49), we get a square (635709614596 = 797314²).

The spelling of 12973665604 in words is "twelve billion, nine hundred seventy-three million, six hundred sixty-five thousand, six hundred four".