87663991799 has 8 divisors (see below), whose sum is σ = 87734178000. Its totient is φ = 87593838592.

The previous prime is 87663991721. The next prime is 87663991819. The reversal of 87663991799 is 99719936678.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87663991799 - 2²⁴ = 87647214583 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 (87663994799) 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, 8180657 + ... + 8191365.

It is an arithmetic number, because the mean of its divisors is an integer number (10966772250).

Almost surely, 2^87663991799 is an apocalyptic number.

87663991799 is a deficient number, since it is larger than the sum of its proper divisors (70186201).

87663991799 is a wasteful number, since it uses less digits than its factorization.

87663991799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16497.

The product of its digits is 277766496, while the sum is 74.

The spelling of 87663991799 in words is "eighty-seven billion, six hundred sixty-three million, nine hundred ninety-one thousand, seven hundred ninety-nine".