99751115556 has 27 divisors (see below), whose sum is σ = 252153443451. Its totient is φ = 33249740184.

The previous prime is 99751115549. The next prime is 99751115573. The reversal of 99751115556 is 65551115799.

The square root of 99751115556 is 315834.

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

99751115556 is a `hidden beast` number, since 9 + 9 + 75 + 1 + 1 + 15 + 556 = 666.

99751115556 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1868685 + ... + 1921323.

Almost surely, 2^99751115556 is an apocalyptic number.

99751115556 is the 315834-th square number.

It is an amenable number.

99751115556 is an abundant number, since it is smaller than the sum of its proper divisors (152402327895).

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

99751115556 is an frugal number, since it uses more digits than its factorization.

99751115556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105288 (or 52644 counting only the distinct ones).

The product of its digits is 2126250, while the sum is 54.

The spelling of 99751115556 in words is "ninety-nine billion, seven hundred fifty-one million, one hundred fifteen thousand, five hundred fifty-six".