87997511179 has 4 divisors (see below), whose sum is σ = 93173835384. Its totient is φ = 82821186976.

The previous prime is 87997511171. The next prime is 87997511197. The reversal of 87997511179 is 97111579978.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 87997511179 - 2³ = 87997511171 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87997511179.

It is not an unprimeable number, because it can be changed into a prime (87997511171) 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, 2588162077 + ... + 2588162110.

It is an arithmetic number, because the mean of its divisors is an integer number (23293458846).

Almost surely, 2^87997511179 is an apocalyptic number.

87997511179 is a deficient number, since it is larger than the sum of its proper divisors (5176324205).

87997511179 is a wasteful number, since it uses less digits than its factorization.

87997511179 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5176324204.

The product of its digits is 10001880, while the sum is 64.

The spelling of 87997511179 in words is "eighty-seven billion, nine hundred ninety-seven million, five hundred eleven thousand, one hundred seventy-nine".