99612996642 has 40 divisors (see below), whose sum is σ = 232911556416. Its totient is φ = 31760664408.

The previous prime is 99612996641. The next prime is 99612996647. The reversal of 99612996642 is 24669921699.

99612996642 is a `hidden beast` number, since 9 + 9 + 612 + 9 + 9 + 6 + 6 + 4 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 99612996642.

It is not an unprimeable number, because it can be changed into a prime (99612996641) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 13363558 + ... + 13371009.

Almost surely, 2^99612996642 is an apocalyptic number.

99612996642 is an abundant number, since it is smaller than the sum of its proper divisors (133298559774).

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

99612996642 is a wasteful number, since it uses less digits than its factorization.

99612996642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26734604 (or 26734595 counting only the distinct ones).

The product of its digits is 22674816, while the sum is 63.

The spelling of 99612996642 in words is "ninety-nine billion, six hundred twelve million, nine hundred ninety-six thousand, six hundred forty-two".