70987531599 has 20 divisors (see below), whose sum is σ = 107625843864. Its totient is φ = 46618673904.

The previous prime is 70987531583. The next prime is 70987531613. The reversal of 70987531599 is 99513578907.

70987531599 is a `hidden beast` number, since 7 + 0 + 9 + 8 + 7 + 5 + 31 + 599 = 666.

It is not a de Polignac number, because 70987531599 - 2⁴ = 70987531583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70987539599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6534792 + ... + 6545645.

Almost surely, 2^70987531599 is an apocalyptic number.

70987531599 is a deficient number, since it is larger than the sum of its proper divisors (36638312265).

70987531599 is a wasteful number, since it uses less digits than its factorization.

70987531599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13080516 (or 13080507 counting only the distinct ones).

The product of its (nonzero) digits is 21432600, while the sum is 63.

The spelling of 70987531599 in words is "seventy billion, nine hundred eighty-seven million, five hundred thirty-one thousand, five hundred ninety-nine".