12492979984 has 15 divisors (see below), whose sum is σ = 24206014983. Its totient is φ = 6246266448.

The previous prime is 12492979963. The next prime is 12492980021. The reversal of 12492979984 is 48997929421.

It is a happy number.

The square root of 12492979984 is 111772.

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

12492979984 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 433117 + ... + 461059.

Almost surely, 2^12492979984 is an apocalyptic number.

12492979984 is the 111772-nd square number.

It is an amenable number.

12492979984 is a deficient number, since it is larger than the sum of its proper divisors (11713034999).

12492979984 is an frugal number, since it uses more digits than its factorization.

12492979984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55894 (or 27945 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 64.

Multiplying 12492979984 by its sum of digits (64), we get a square (799550718976 = 894176²).

The spelling of 12492979984 in words is "twelve billion, four hundred ninety-two million, nine hundred seventy-nine thousand, nine hundred eighty-four".