99815682240 has 896 divisors, whose sum is σ = 401341132800. Its totient is φ = 23197777920.

The previous prime is 99815682163. The next prime is 99815682277. The reversal of 99815682240 is 4228651899.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 127 ways as a sum of consecutive naturals, for example, 131163460 + ... + 131164220.

Almost surely, 2^99815682240 is an apocalyptic number.

99815682240 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 99815682240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200670566400).

99815682240 is an abundant number, since it is smaller than the sum of its proper divisors (301525450560).

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

99815682240 is a wasteful number, since it uses less digits than its factorization.

99815682240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870 (or 854 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 99815682240 in words is "ninety-nine billion, eight hundred fifteen million, six hundred eighty-two thousand, two hundred forty".