12492977917551 has 32 divisors (see below), whose sum is σ = 17458195645440. Its totient is φ = 7931437012224.

The previous prime is 12492977917487. The next prime is 12492977917571. The reversal of 12492977917551 is 15571977929421.

It is not a de Polignac number, because 12492977917551 - 2⁶ = 12492977917487 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12492977917571) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29861845 + ... + 30277313.

It is an arithmetic number, because the mean of its divisors is an integer number (545568613920).

Almost surely, 2^{12492977917551} is an apocalyptic number.

12492977917551 is a deficient number, since it is larger than the sum of its proper divisors (4965217727889).

12492977917551 is a wasteful number, since it uses less digits than its factorization.

12492977917551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417415.

The product of its digits is 100018800, while the sum is 69.

The spelling of 12492977917551 in words is "twelve trillion, four hundred ninety-two billion, nine hundred seventy-seven million, nine hundred seventeen thousand, five hundred fifty-one".