117887561558 has 16 divisors (see below), whose sum is σ = 192180856560. Its totient is φ = 53910471456.

The previous prime is 117887561551. The next prime is 117887561563. The reversal of 117887561558 is 855165788711.

It is a happy number.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 117887561558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117887561551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20795960 + ... + 20801627.

It is an arithmetic number, because the mean of its divisors is an integer number (12011303535).

Almost surely, 2^117887561558 is an apocalyptic number.

117887561558 is a deficient number, since it is larger than the sum of its proper divisors (74293295002).

117887561558 is a wasteful number, since it uses less digits than its factorization.

117887561558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41597711.

The product of its digits is 18816000, while the sum is 62.

The spelling of 117887561558 in words is "one hundred seventeen billion, eight hundred eighty-seven million, five hundred sixty-one thousand, five hundred fifty-eight".