99709715688 has 64 divisors (see below), whose sum is σ = 272566840320. Its totient is φ = 30144926400.

The previous prime is 99709715669. The next prime is 99709715689. The reversal of 99709715688 is 88651790799.

It is not an unprimeable number, because it can be changed into a prime (99709715689) 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, 324370 + ... + 551937.

It is an arithmetic number, because the mean of its divisors is an integer number (4258856880).

Almost surely, 2^99709715688 is an apocalyptic number.

It is an amenable number.

99709715688 is an abundant number, since it is smaller than the sum of its proper divisors (172857124632).

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

99709715688 is a wasteful number, since it uses less digits than its factorization.

99709715688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876758 (or 876754 counting only the distinct ones).

The product of its (nonzero) digits is 68584320, while the sum is 69.

The spelling of 99709715688 in words is "ninety-nine billion, seven hundred nine million, seven hundred fifteen thousand, six hundred eighty-eight".