99851403870720 has 560 divisors, whose sum is σ = 359391485990592. Its totient is φ = 26594278318080.

The previous prime is 99851403870689. The next prime is 99851403870733. The reversal of 99851403870720 is 2707830415899.

99851403870720 is a `hidden beast` number, since 9 + 9 + 85 + 1 + 403 + 87 + 0 + 72 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1535883015 + ... + 1535948025.

Almost surely, 2^{99851403870720} is an apocalyptic number.

99851403870720 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 99851403870720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179695742995296).

99851403870720 is an abundant number, since it is smaller than the sum of its proper divisors (259540082119872).

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

99851403870720 is an frugal number, since it uses more digits than its factorization.

99851403870720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65875 (or 65844 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 63.

The spelling of 99851403870720 in words is "ninety-nine trillion, eight hundred fifty-one billion, four hundred three million, eight hundred seventy thousand, seven hundred twenty".