99219087680 has 28 divisors (see below), whose sum is σ = 236265453300. Its totient is φ = 39687634944.

The previous prime is 99219087647. The next prime is 99219087707. The reversal of 99219087680 is 8678091299.

It can be written as a sum of positive squares in 2 ways, for example, as 49611325696 + 49607761984 = 222736^2 + 222728^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155029505 + ... + 155030144.

Almost surely, 2^99219087680 is an apocalyptic number.

It is an amenable number.

99219087680 is an abundant number, since it is smaller than the sum of its proper divisors (137046365620).

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

99219087680 is a wasteful number, since it uses less digits than its factorization.

99219087680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310059666 (or 310059656 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 59.

The spelling of 99219087680 in words is "ninety-nine billion, two hundred nineteen million, eighty-seven thousand, six hundred eighty".