12398377937492 has 6 divisors (see below), whose sum is σ = 21697161390618. Its totient is φ = 6199188968744.

The previous prime is 12398377937467. The next prime is 12398377937501. The reversal of 12398377937492 is 29473977389321.

12398377937492 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 12375662624836 + 22715312656 = 3517906^2 + 150716^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1549797242183 + ... + 1549797242190.

It is an arithmetic number, because the mean of its divisors is an integer number (3616193565103).

Almost surely, 2^{12398377937492} is an apocalyptic number.

It is an amenable number.

12398377937492 is a deficient number, since it is larger than the sum of its proper divisors (9298783453126).

12398377937492 is a wasteful number, since it uses less digits than its factorization.

12398377937492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3099594484377 (or 3099594484375 counting only the distinct ones).

The product of its digits is 864162432, while the sum is 74.

The spelling of 12398377937492 in words is "twelve trillion, three hundred ninety-eight billion, three hundred seventy-seven million, nine hundred thirty-seven thousand, four hundred ninety-two".