99916536720 has 640 divisors, whose sum is σ = 424772812800. Its totient is φ = 18754928640.

The previous prime is 99916536703. The next prime is 99916536749. The reversal of 99916536720 is 2763561999.

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, 11286856 + ... + 11295704.

It is an arithmetic number, because the mean of its divisors is an integer number (663707520).

Almost surely, 2^99916536720 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 99916536720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212386406400).

99916536720 is an abundant number, since it is smaller than the sum of its proper divisors (324856276080).

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

99916536720 is a wasteful number, since it uses less digits than its factorization.

99916536720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8943 (or 8937 counting only the distinct ones).

The product of its (nonzero) digits is 5511240, while the sum is 57.

It can be divided in two parts, 99916 and 536720, that added together give a palindrome (636636).

The spelling of 99916536720 in words is "ninety-nine billion, nine hundred sixteen million, five hundred thirty-six thousand, seven hundred twenty".