99013981272 has 64 divisors (see below), whose sum is σ = 251299505280. Its totient is φ = 32502995712.

The previous prime is 99013981223. The next prime is 99013981289. The reversal of 99013981272 is 27218931099.

It is a super-3 number, since 3×99013981272³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8215683 + ... + 8227725.

It is an arithmetic number, because the mean of its divisors is an integer number (3926554770).

Almost surely, 2^99013981272 is an apocalyptic number.

It is an amenable number.

99013981272 is an abundant number, since it is smaller than the sum of its proper divisors (152285524008).

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

99013981272 is a wasteful number, since it uses less digits than its factorization.

99013981272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17232 (or 17228 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 51.

The spelling of 99013981272 in words is "ninety-nine billion, thirteen million, nine hundred eighty-one thousand, two hundred seventy-two".