99612809732 has 6 divisors (see below), whose sum is σ = 174322417038. Its totient is φ = 49806404864.

The previous prime is 99612809711. The next prime is 99612809789. The reversal of 99612809732 is 23790821699.

It can be written as a sum of positive squares in only one way, i.e., 68416772356 + 31196037376 = 261566^2 + 176624^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12451601213 + ... + 12451601220.

It is an arithmetic number, because the mean of its divisors is an integer number (29053736173).

Almost surely, 2^99612809732 is an apocalyptic number.

It is an amenable number.

99612809732 is a deficient number, since it is larger than the sum of its proper divisors (74709607306).

99612809732 is a wasteful number, since it uses less digits than its factorization.

99612809732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24903202437 (or 24903202435 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 56.

The spelling of 99612809732 in words is "ninety-nine billion, six hundred twelve million, eight hundred nine thousand, seven hundred thirty-two".