13887118977 has 16 divisors (see below), whose sum is σ = 18617983488. Its totient is φ = 9207263360.

The previous prime is 13887118919. The next prime is 13887118997. The reversal of 13887118977 is 77981178831.

It is a cyclic number.

It is not a de Polignac number, because 13887118977 - 2¹⁰ = 13887117953 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13887118977.

It is not an unprimeable number, because it can be changed into a prime (13887118997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 591727 + ... + 614747.

It is an arithmetic number, because the mean of its divisors is an integer number (1163623968).

Almost surely, 2^13887118977 is an apocalyptic number.

It is an amenable number.

13887118977 is a deficient number, since it is larger than the sum of its proper divisors (4730864511).

13887118977 is a wasteful number, since it uses less digits than its factorization.

13887118977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24120.

The product of its digits is 4741632, while the sum is 60.

The spelling of 13887118977 in words is "thirteen billion, eight hundred eighty-seven million, one hundred eighteen thousand, nine hundred seventy-seven".