99140321280 has 1440 divisors, whose sum is σ = 442099703808. Its totient is φ = 18402508800.

The previous prime is 99140321237. The next prime is 99140321303. The reversal of 99140321280 is 8212304199.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3198074865 + ... + 3198074895.

Almost surely, 2^99140321280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99140321280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221049851904).

99140321280 is an abundant number, since it is smaller than the sum of its proper divisors (342959382528).

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

99140321280 is a wasteful number, since it uses less digits than its factorization.

99140321280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The spelling of 99140321280 in words is "ninety-nine billion, one hundred forty million, three hundred twenty-one thousand, two hundred eighty".