99507555000 has 640 divisors, whose sum is σ = 408469248000. Its totient is φ = 21954240000.

The previous prime is 99507554981. The next prime is 99507555071. The reversal of 99507555000 is 55570599.

99507555000 is a `hidden beast` number, since 9 + 95 + 0 + 7 + 5 + 550 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 27403185 + ... + 27406815.

It is an arithmetic number, because the mean of its divisors is an integer number (638233200).

Almost surely, 2^99507555000 is an apocalyptic number.

99507555000 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 99507555000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204234624000).

99507555000 is an abundant number, since it is smaller than the sum of its proper divisors (308961693000).

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

99507555000 is a wasteful number, since it uses less digits than its factorization.

99507555000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3702 (or 3677 counting only the distinct ones).

The product of its (nonzero) digits is 354375, while the sum is 45.

The spelling of 99507555000 in words is "ninety-nine billion, five hundred seven million, five hundred fifty-five thousand".