87188979053 has 4 divisors (see below), whose sum is σ = 95115249888. Its totient is φ = 79262708220.

The previous prime is 87188979037. The next prime is 87188979089. The reversal of 87188979053 is 35097988178.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87188979053 - 2⁴ = 87188979037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87188979253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3963135401 + ... + 3963135422.

It is an arithmetic number, because the mean of its divisors is an integer number (23778812472).

Almost surely, 2^87188979053 is an apocalyptic number.

It is an amenable number.

87188979053 is a deficient number, since it is larger than the sum of its proper divisors (7926270835).

87188979053 is a wasteful number, since it uses less digits than its factorization.

87188979053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7926270834.

The product of its (nonzero) digits is 30481920, while the sum is 65.

The spelling of 87188979053 in words is "eighty-seven billion, one hundred eighty-eight million, nine hundred seventy-nine thousand, fifty-three".