99876543120 has 60 divisors (see below), whose sum is σ = 335418726396. Its totient is φ = 26633744640.

The previous prime is 99876543113. The next prime is 99876543161. The reversal of 99876543120 is 2134567899.

99876543120 is a `hidden beast` number, since 9 + 9 + 8 + 76 + 543 + 1 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 35784532224 + 64092010896 = 189168^2 + 253164^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69357991 + ... + 69359430.

It is a 2-persistent number, because it is pandigital, and so is 2⋅99876543120 = 199753086240, but 3⋅99876543120 = 299629629360 is not.

Almost surely, 2^99876543120 is an apocalyptic number.

99876543120 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

99876543120 is an abundant number, since it is smaller than the sum of its proper divisors (235542183276).

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

99876543120 is a wasteful number, since it uses less digits than its factorization.

99876543120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138717440 (or 138717431 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 99876543120 in words is "ninety-nine billion, eight hundred seventy-six million, five hundred forty-three thousand, one hundred twenty".