99687715912 has 16 divisors (see below), whose sum is σ = 186924129840. Its totient is φ = 49841281296.

The previous prime is 99687715903. The next prime is 99687715969. The reversal of 99687715912 is 21951778699.

It is a super-3 number, since 3×99687715912³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 152398 + ... + 471805.

It is an arithmetic number, because the mean of its divisors is an integer number (11682758115).

Almost surely, 2^99687715912 is an apocalyptic number.

It is an amenable number.

99687715912 is a deficient number, since it is larger than the sum of its proper divisors (87236413928).

99687715912 is a wasteful number, since it uses less digits than its factorization.

99687715912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644172 (or 644168 counting only the distinct ones).

The product of its digits is 17146080, while the sum is 64.

The spelling of 99687715912 in words is "ninety-nine billion, six hundred eighty-seven million, seven hundred fifteen thousand, nine hundred twelve".