99999616015688 has 64 divisors (see below), whose sum is σ = 200061387820800. Its totient is φ = 46695389045760.

The previous prime is 99999616015687. The next prime is 99999616015709. The reversal of 99999616015688 is 88651061699999.

It is a super-2 number, since 2×99999616015688² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99999616015687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211542698 + ... + 212014886.

It is an arithmetic number, because the mean of its divisors is an integer number (3125959184700).

Almost surely, 2^{99999616015688} is an apocalyptic number.

It is an amenable number.

99999616015688 is an abundant number, since it is smaller than the sum of its proper divisors (100061771805112).

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

99999616015688 is a wasteful number, since it uses less digits than its factorization.

99999616015688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484230 (or 484226 counting only the distinct ones).

The product of its (nonzero) digits is 4081466880, while the sum is 86.

The spelling of 99999616015688 in words is "ninety-nine trillion, nine hundred ninety-nine billion, six hundred sixteen million, fifteen thousand, six hundred eighty-eight".