75999987036 has 18 divisors (see below), whose sum is σ = 192111078432. Its totient is φ = 25333329000.

The previous prime is 75999987029. The next prime is 75999987059. The reversal of 75999987036 is 63078999957.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1055555340 + ... + 1055555411.

Almost surely, 2^75999987036 is an apocalyptic number.

It is an amenable number.

75999987036 is an abundant number, since it is smaller than the sum of its proper divisors (116111091396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75999987036 is a wasteful number, since it uses less digits than its factorization.

75999987036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111110761 (or 2111110756 counting only the distinct ones).

The product of its (nonzero) digits is 231472080, while the sum is 72.

The spelling of 75999987036 in words is "seventy-five billion, nine hundred ninety-nine million, nine hundred eighty-seven thousand, thirty-six".