12509356479992 has 16 divisors (see below), whose sum is σ = 23463139764960. Its totient is φ = 6252519209344.

The previous prime is 12509356479973. The next prime is 12509356480009. The reversal of 12509356479992 is 29997465390521.

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, 269854208 + ... + 269900559.

It is an arithmetic number, because the mean of its divisors is an integer number (1466446235310).

Almost surely, 2^{12509356479992} is an apocalyptic number.

It is an amenable number.

12509356479992 is a deficient number, since it is larger than the sum of its proper divisors (10953783284968).

12509356479992 is a wasteful number, since it uses less digits than its factorization.

12509356479992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539757670 (or 539757666 counting only the distinct ones).

The product of its (nonzero) digits is 330674400, while the sum is 71.

The spelling of 12509356479992 in words is "twelve trillion, five hundred nine billion, three hundred fifty-six million, four hundred seventy-nine thousand, nine hundred ninety-two".