99716890895856 has 640 divisors, whose sum is σ = 328097000448000. Its totient is φ = 28764708470784.

The previous prime is 99716890895827. The next prime is 99716890895891. The reversal of 99716890895856 is 65859809861799.

99716890895856 is a `hidden beast` number, since 9 + 9 + 7 + 16 + 8 + 9 + 0 + 8 + 9 + 585 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1397949600 + ... + 1398020928.

It is an arithmetic number, because the mean of its divisors is an integer number (512651563200).

Almost surely, 2^{99716890895856} 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 99716890895856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164048500224000).

99716890895856 is an abundant number, since it is smaller than the sum of its proper divisors (228380109552144).

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

99716890895856 is a wasteful number, since it uses less digits than its factorization.

99716890895856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71598 (or 71586 counting only the distinct ones).

The product of its (nonzero) digits is 21163161600, while the sum is 90.

The spelling of 99716890895856 in words is "ninety-nine trillion, seven hundred sixteen billion, eight hundred ninety million, eight hundred ninety-five thousand, eight hundred fifty-six".