99979922700 has 288 divisors, whose sum is σ = 376295915520. Its totient is φ = 22295001600.

The previous prime is 99979922687. The next prime is 99979922711. The reversal of 99979922700 is 722997999.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 710389 + ... + 839411.

It is an arithmetic number, because the mean of its divisors is an integer number (1306583040).

Almost surely, 2^99979922700 is an apocalyptic number.

99979922700 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99979922700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188147957760).

99979922700 is an abundant number, since it is smaller than the sum of its proper divisors (276315992820).

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

99979922700 is a wasteful number, since it uses less digits than its factorization.

99979922700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129094 (or 129081 counting only the distinct ones).

The product of its (nonzero) digits is 11573604, while the sum is 63.

The spelling of 99979922700 in words is "ninety-nine billion, nine hundred seventy-nine million, nine hundred twenty-two thousand, seven hundred".