99876036780 has 144 divisors (see below), whose sum is σ = 329430104640. Its totient is φ = 24346123776.

The previous prime is 99876036739. The next prime is 99876036781. The reversal of 99876036780 is 8763067899.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (99876036781) 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, 33826 + ... + 448214.

It is an arithmetic number, because the mean of its divisors is an integer number (2287709060).

Almost surely, 2^99876036780 is an apocalyptic number.

99876036780 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 99876036780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164715052320).

99876036780 is an abundant number, since it is smaller than the sum of its proper divisors (229554067860).

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

99876036780 is a wasteful number, since it uses less digits than its factorization.

99876036780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414520 (or 414515 counting only the distinct ones).

The product of its (nonzero) digits is 27433728, while the sum is 63.

The spelling of 99876036780 in words is "ninety-nine billion, eight hundred seventy-six million, thirty-six thousand, seven hundred eighty".