12492977917550 has 48 divisors (see below), whose sum is σ = 25034239581120. Its totient is φ = 4610977319040.

The previous prime is 12492977917487. The next prime is 12492977917571. The reversal of 12492977917550 is 5571977929421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2126045 + ... + 5431944.

It is an arithmetic number, because the mean of its divisors is an integer number (521546657940).

Almost surely, 2^{12492977917550} is an apocalyptic number.

12492977917550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12492977917550 is an abundant number, since it is smaller than the sum of its proper divisors (12541261663570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12492977917550 is a wasteful number, since it uses less digits than its factorization.

12492977917550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7560557 (or 7560552 counting only the distinct ones).

The product of its (nonzero) digits is 100018800, while the sum is 68.

The spelling of 12492977917550 in words is "twelve trillion, four hundred ninety-two billion, nine hundred seventy-seven million, nine hundred seventeen thousand, five hundred fifty".