12987777357 has 16 divisors (see below), whose sum is σ = 19243414080. Its totient is φ = 8657500176.

The previous prime is 12987777353. The next prime is 12987777377. The reversal of 12987777357 is 75377778921.

It is not a de Polignac number, because 12987777357 - 2² = 12987777353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12987777294 and 12987777303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12987777353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258463 + ... + 304595.

It is an arithmetic number, because the mean of its divisors is an integer number (1202713380).

Almost surely, 2^12987777357 is an apocalyptic number.

It is an amenable number.

12987777357 is a deficient number, since it is larger than the sum of its proper divisors (6255636723).

12987777357 is a wasteful number, since it uses less digits than its factorization.

12987777357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56569 (or 56563 counting only the distinct ones).

The product of its digits is 36303120, while the sum is 63.

The spelling of 12987777357 in words is "twelve billion, nine hundred eighty-seven million, seven hundred seventy-seven thousand, three hundred fifty-seven".