99855159210 has 64 divisors (see below), whose sum is σ = 266393606400. Its totient is φ = 26616724416.

The previous prime is 99855159197. The next prime is 99855159221. The reversal of 99855159210 is 1295155899.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 567627 + ... + 722433.

It is an arithmetic number, because the mean of its divisors is an integer number (4162400100).

Almost surely, 2^99855159210 is an apocalyptic number.

99855159210 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

99855159210 is the 258012-nd pentagonal number.

99855159210 is an abundant number, since it is smaller than the sum of its proper divisors (166538447190).

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

99855159210 is a wasteful number, since it uses less digits than its factorization.

99855159210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157212 (or 157206 counting only the distinct ones).

The product of its (nonzero) digits is 1458000, while the sum is 54.

The spelling of 99855159210 in words is "ninety-nine billion, eight hundred fifty-five million, one hundred fifty-nine thousand, two hundred ten".