99338138789904 has 225 divisors, whose sum is σ = 334462812759471. Its totient is φ = 28381607755200.

The previous prime is 99338138789891. The next prime is 99338138789959. The reversal of 99338138789904 is 40998783183399.

The square root of 99338138789904 is 9966852.

It is a perfect power (a square), and thus also a powerful number.

99338138789904 is a `hidden beast` number, since 99 + 338 + 1 + 38 + 7 + 89 + 90 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 2511626929 + ... + 2511666479.

Almost surely, 2^{99338138789904} is an apocalyptic number.

99338138789904 is the 9966852-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99338138789904

99338138789904 is an abundant number, since it is smaller than the sum of its proper divisors (235124673969567).

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

99338138789904 is an frugal number, since it uses more digits than its factorization.

99338138789904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79136 (or 39563 counting only the distinct ones).

The product of its (nonzero) digits is 2539579392, while the sum is 81.

99338138789904 divided by its sum of digits (81) gives a square (1226396775184 = 1107428²).

The spelling of 99338138789904 in words is "ninety-nine trillion, three hundred thirty-eight billion, one hundred thirty-eight million, seven hundred eighty-nine thousand, nine hundred four".