99506178916 has 27 divisors (see below), whose sum is σ = 175869586809. Its totient is φ = 49262570928.

The previous prime is 99506178857. The next prime is 99506178929. The reversal of 99506178916 is 61987160599.

The square root of 99506178916 is 315446.

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

It can be written as a sum of positive squares in only one way, i.e., 69355329316 + 30150849600 = 263354^2 + 173640^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 68766505 + ... + 68767951.

Almost surely, 2^99506178916 is an apocalyptic number.

99506178916 is the 315446-th square number.

It is an amenable number.

99506178916 is a deficient number, since it is larger than the sum of its proper divisors (76363407893).

99506178916 is an equidigital number, since it uses as much as digits as its factorization.

99506178916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3116 (or 1558 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 61.

The spelling of 99506178916 in words is "ninety-nine billion, five hundred six million, one hundred seventy-eight thousand, nine hundred sixteen".