13887511388 has 12 divisors (see below), whose sum is σ = 25582257960. Its totient is φ = 6578294832.

The previous prime is 13887511373. The next prime is 13887511397. The reversal of 13887511388 is 88311578831.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 91365131 + ... + 91365282.

It is an arithmetic number, because the mean of its divisors is an integer number (2131854830).

Almost surely, 2^13887511388 is an apocalyptic number.

It is an amenable number.

13887511388 is a deficient number, since it is larger than the sum of its proper divisors (11694746572).

13887511388 is a wasteful number, since it uses less digits than its factorization.

13887511388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182730436 (or 182730434 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 53.

The spelling of 13887511388 in words is "thirteen billion, eight hundred eighty-seven million, five hundred eleven thousand, three hundred eighty-eight".