99479997769156 has 9 divisors (see below), whose sum is σ = 174090031004911. Its totient is φ = 49739988910612.

The previous prime is 99479997769079. The next prime is 99479997769177. The reversal of 99479997769156 is 65196779997499.

The square root of 99479997769156 is 9973966.

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

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, 17454441 + ... + 22441423.

Almost surely, 2^{99479997769156} is an apocalyptic number.

99479997769156 is the 9973966-th square number.

It is an amenable number.

99479997769156 is a deficient number, since it is larger than the sum of its proper divisors (74610033235755).

99479997769156 is an frugal number, since it uses more digits than its factorization.

99479997769156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9973970 (or 4986985 counting only the distinct ones).

The product of its digits is 131244669360, while the sum is 97.

The spelling of 99479997769156 in words is "ninety-nine trillion, four hundred seventy-nine billion, nine hundred ninety-seven million, seven hundred sixty-nine thousand, one hundred fifty-six".