12450357798879 has 288 divisors, whose sum is σ = 23130405838848. Its totient is φ = 5899623206400.

The previous prime is 12450357798863. The next prime is 12450357798929. The reversal of 12450357798879 is 97889775305421.

It is not a de Polignac number, because 12450357798879 - 2⁴ = 12450357798863 is a prime.

It is a super-2 number, since 2×12450357798879² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12450357798879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12450357798779) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 9015464769 + ... + 9015466149.

Almost surely, 2^{12450357798879} is an apocalyptic number.

12450357798879 is a deficient number, since it is larger than the sum of its proper divisors (10680048039969).

12450357798879 is a wasteful number, since it uses less digits than its factorization.

12450357798879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867 (or 1849 counting only the distinct ones).

The product of its (nonzero) digits is 1066867200, while the sum is 75.

The spelling of 12450357798879 in words is "twelve trillion, four hundred fifty billion, three hundred fifty-seven million, seven hundred ninety-eight thousand, eight hundred seventy-nine".