99876521430 has 96 divisors (see below), whose sum is σ = 296902292544. Its totient is φ = 22819200768.

The previous prime is 99876521413. The next prime is 99876521431. The reversal of 99876521430 is 3412567899.

99876521430 is a `hidden beast` number, since 9 + 9 + 8 + 76 + 521 + 43 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99876521431) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1502784 + ... + 1567836.

It is an arithmetic number, because the mean of its divisors is an integer number (3092732214).

It is a 2-persistent number, because it is pandigital, and so is 2⋅99876521430 = 199753042860, but 3⋅99876521430 = 299629564290 is not.

Almost surely, 2^99876521430 is an apocalyptic number.

99876521430 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

99876521430 is an abundant number, since it is smaller than the sum of its proper divisors (197025771114).

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

99876521430 is a wasteful number, since it uses less digits than its factorization.

99876521430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67510 (or 67507 counting only the distinct ones).

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

The spelling of 99876521430 in words is "ninety-nine billion, eight hundred seventy-six million, five hundred twenty-one thousand, four hundred thirty".