99557969559876 has 27 divisors (see below), whose sum is σ = 251660574385311. Its totient is φ = 33185969897544.

The previous prime is 99557969559833. The next prime is 99557969559901. The reversal of 99557969559876 is 67895596975599.

It is a happy number.

The square root of 99557969559876 is 9977874.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 59035755 + ... + 60698733.

Almost surely, 2^{99557969559876} is an apocalyptic number.

99557969559876 is the 9977874-th square number.

It is an amenable number.

99557969559876 is an abundant number, since it is smaller than the sum of its proper divisors (152102604825435).

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

99557969559876 is an frugal number, since it uses more digits than its factorization.

99557969559876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3325968 (or 1662984 counting only the distinct ones).

The product of its digits is 520812180000, while the sum is 99.

The spelling of 99557969559876 in words is "ninety-nine trillion, five hundred fifty-seven billion, nine hundred sixty-nine million, five hundred fifty-nine thousand, eight hundred seventy-six".