9899074991232 has 192 divisors, whose sum is σ = 34469993750400. Its totient is φ = 2661936095232.

The previous prime is 9899074991203. The next prime is 9899074991237. The reversal of 9899074991232 is 2321994709989.

9899074991232 is a `hidden beast` number, since 9 + 8 + 9 + 9 + 0 + 7 + 499 + 123 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (9899074991237) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35967732 + ... + 36241907.

It is an arithmetic number, because the mean of its divisors is an integer number (179531217450).

Almost surely, 2^{9899074991232} is an apocalyptic number.

It is an amenable number.

9899074991232 is an abundant number, since it is smaller than the sum of its proper divisors (24570918759168).

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

9899074991232 is a wasteful number, since it uses less digits than its factorization.

9899074991232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72209683 (or 72209668 counting only the distinct ones).

The product of its (nonzero) digits is 158723712, while the sum is 72.

The spelling of 9899074991232 in words is "nine trillion, eight hundred ninety-nine billion, seventy-four million, nine hundred ninety-one thousand, two hundred thirty-two".