99826720612 has 24 divisors (see below), whose sum is σ = 189972317304. Its totient is φ = 45707622912.

The previous prime is 99826720607. The next prime is 99826720633. The reversal of 99826720612 is 21602762899.

It can be written as a sum of positive squares in 4 ways, for example, as 70343770176 + 29482950436 = 265224^2 + 171706^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 99826720612.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19835863 + ... + 19840894.

It is an arithmetic number, because the mean of its divisors is an integer number (7915513221).

Almost surely, 2^99826720612 is an apocalyptic number.

It is an amenable number.

99826720612 is a deficient number, since it is larger than the sum of its proper divisors (90145596692).

99826720612 is a wasteful number, since it uses less digits than its factorization.

99826720612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39676815 (or 39676813 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 99826720612 in words is "ninety-nine billion, eight hundred twenty-six million, seven hundred twenty thousand, six hundred twelve".