99104721072 has 120 divisors (see below), whose sum is σ = 301408583616. Its totient is φ = 27974427264.

The previous prime is 99104721061. The next prime is 99104721073. The reversal of 99104721072 is 27012740199.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (99104721073) 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, 58618 + ... + 449049.

Almost surely, 2^99104721072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99104721072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150704291808).

99104721072 is an abundant number, since it is smaller than the sum of its proper divisors (202303862544).

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

99104721072 is a wasteful number, since it uses less digits than its factorization.

99104721072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507775 (or 507762 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 42.

The spelling of 99104721072 in words is "ninety-nine billion, one hundred four million, seven hundred twenty-one thousand, seventy-two".