99645935040 has 84 divisors (see below), whose sum is σ = 342740507304. Its totient is φ = 26572248576.

The previous prime is 99645935033. The next prime is 99645935041. The reversal of 99645935040 is 4053954699.

99645935040 is a `hidden beast` number, since 9 + 9 + 6 + 4 + 593 + 5 + 0 + 40 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99645935041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17296762 + ... + 17302521.

Almost surely, 2^99645935040 is an apocalyptic number.

99645935040 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

99645935040 is an abundant number, since it is smaller than the sum of its proper divisors (243094572264).

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

99645935040 is a wasteful number, since it uses less digits than its factorization.

99645935040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34599306 (or 34599293 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 54.

The spelling of 99645935040 in words is "ninety-nine billion, six hundred forty-five million, nine hundred thirty-five thousand, forty".