99715686720 has 896 divisors, whose sum is σ = 375936906240. Its totient is φ = 22189178880.

The previous prime is 99715686709. The next prime is 99715686739. The reversal of 99715686720 is 2768651799.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 435439566 + ... + 435439794.

It is an arithmetic number, because the mean of its divisors is an integer number (419572440).

Almost surely, 2^99715686720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99715686720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187968453120).

99715686720 is an abundant number, since it is smaller than the sum of its proper divisors (276221219520).

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

99715686720 is a wasteful number, since it uses less digits than its factorization.

99715686720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 11430720, while the sum is 60.

The spelling of 99715686720 in words is "ninety-nine billion, seven hundred fifteen million, six hundred eighty-six thousand, seven hundred twenty".