99555807120 has 320 divisors, whose sum is σ = 385295339520. Its totient is φ = 20659046400.

The previous prime is 99555807079. The next prime is 99555807121. The reversal of 99555807120 is 2170855599.

It is a super-2 number, since 2×99555807120² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99555807121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15501510 + ... + 15507930.

It is an arithmetic number, because the mean of its divisors is an integer number (1204047936).

Almost surely, 2^99555807120 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 99555807120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192647669760).

99555807120 is an abundant number, since it is smaller than the sum of its proper divisors (285739532400).

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

99555807120 is a wasteful number, since it uses less digits than its factorization.

99555807120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7294 (or 7288 counting only the distinct ones).

The product of its (nonzero) digits is 1134000, while the sum is 51.

The spelling of 99555807120 in words is "ninety-nine billion, five hundred fifty-five million, eight hundred seven thousand, one hundred twenty".