99878054080896 has 1152 divisors, whose sum is σ = 372329901871200. Its totient is φ = 25458053677056.

The previous prime is 99878054080877. The next prime is 99878054080913. The reversal of 99878054080896 is 69808045087899.

It is a tau number, because it is divible by the number of its divisors (1152).

It is a super-2 number, since 2×99878054080896² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2605789860 + ... + 2605828188.

Almost surely, 2^{99878054080896} is an apocalyptic number.

99878054080896 is a gapful number since it is divisible by the number (96) 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 99878054080896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186164950935600).

99878054080896 is an abundant number, since it is smaller than the sum of its proper divisors (272451847790304).

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

99878054080896 is a wasteful number, since it uses less digits than its factorization.

99878054080896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38496 (or 38474 counting only the distinct ones).

The product of its (nonzero) digits is 2508226560, while the sum is 81.

The spelling of 99878054080896 in words is "ninety-nine trillion, eight hundred seventy-eight billion, fifty-four million, eighty thousand, eight hundred ninety-six".