99624821956 has 27 divisors (see below), whose sum is σ = 191647054767. Its totient is φ = 45280853640.

The previous prime is 99624821927. The next prime is 99624821957. The reversal of 99624821956 is 65912842699.

The square root of 99624821956 is 315634.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99624821894 and 99624821903.

It is not an unprimeable number, because it can be changed into a prime (99624821957) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6936775 + ... + 6951121.

Almost surely, 2^99624821956 is an apocalyptic number.

99624821956 is the 315634-th square number.

It is an amenable number.

99624821956 is a deficient number, since it is larger than the sum of its proper divisors (92022232811).

99624821956 is an equidigital number, since it uses as much as digits as its factorization.

99624821956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28720 (or 14360 counting only the distinct ones).

The product of its digits is 16796160, while the sum is 61.

The spelling of 99624821956 in words is "ninety-nine billion, six hundred twenty-four million, eight hundred twenty-one thousand, nine hundred fifty-six".