11687144157 has 64 divisors (see below), whose sum is σ = 19338242560. Its totient is φ = 6928975872.

The previous prime is 11687144149. The next prime is 11687144179. The reversal of 11687144157 is 75144178611.

11687144157 is a `hidden beast` number, since 1 + 168 + 71 + 4 + 415 + 7 = 666.

It is not a de Polignac number, because 11687144157 - 2³ = 11687144149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11687144197) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1333293 + ... + 1342029.

It is an arithmetic number, because the mean of its divisors is an integer number (302160040).

Almost surely, 2^11687144157 is an apocalyptic number.

It is an amenable number.

11687144157 is a deficient number, since it is larger than the sum of its proper divisors (7651098403).

11687144157 is a wasteful number, since it uses less digits than its factorization.

11687144157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8899 (or 8893 counting only the distinct ones).

The product of its digits is 188160, while the sum is 45.

It can be divided in two parts, 116871 and 44157, that added together give a triangular number (161028 = T₅₆₇).

The spelling of 11687144157 in words is "eleven billion, six hundred eighty-seven million, one hundred forty-four thousand, one hundred fifty-seven".