99204851920 has 20 divisors (see below), whose sum is σ = 230651280900. Its totient is φ = 39681940736.

The previous prime is 99204851887. The next prime is 99204851923. The reversal of 99204851920 is 2915840299.

It can be written as a sum of positive squares in 2 ways, for example, as 11366118544 + 87838733376 = 106612^2 + 296376^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99204851923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 620030245 + ... + 620030404.

It is an arithmetic number, because the mean of its divisors is an integer number (11532564045).

Almost surely, 2^99204851920 is an apocalyptic number.

It is an amenable number.

99204851920 is an abundant number, since it is smaller than the sum of its proper divisors (131446428980).

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

99204851920 is a wasteful number, since it uses less digits than its factorization.

99204851920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240060662 (or 1240060656 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 49.

The spelling of 99204851920 in words is "ninety-nine billion, two hundred four million, eight hundred fifty-one thousand, nine hundred twenty".