99608409664 has 21 divisors (see below), whose sum is σ = 197665448331. Its totient is φ = 49802942400.

The previous prime is 99608409653. The next prime is 99608409673. The reversal of 99608409664 is 46690480699.

The square root of 99608409664 is 315608.

It is a perfect power (a square), and thus also a powerful number.

It is a super-3 number, since 3×99608409664³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2505139 + ... + 2544589.

Almost surely, 2^99608409664 is an apocalyptic number.

99608409664 is the 315608-th square number.

It is an amenable number.

99608409664 is a deficient number, since it is larger than the sum of its proper divisors (98057038667).

99608409664 is an frugal number, since it uses more digits than its factorization.

99608409664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78914 (or 39453 counting only the distinct ones).

The product of its (nonzero) digits is 20155392, while the sum is 61.

The spelling of 99608409664 in words is "ninety-nine billion, six hundred eight million, four hundred nine thousand, six hundred sixty-four".