990240312159 has 96 divisors (see below), whose sum is σ = 1819537574400. Its totient is φ = 525269670912.

The previous prime is 990240312143. The next prime is 990240312161. The reversal of 990240312159 is 951213042099.

990240312159 is a `hidden beast` number, since 9 + 90 + 2 + 403 + 1 + 2 + 159 = 666.

It is not a de Polignac number, because 990240312159 - 2⁴ = 990240312143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990240312109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1876392 + ... + 2345490.

It is an arithmetic number, because the mean of its divisors is an integer number (18953516400).

Almost surely, 2^990240312159 is an apocalyptic number.

990240312159 is a deficient number, since it is larger than the sum of its proper divisors (829297262241).

990240312159 is a wasteful number, since it uses less digits than its factorization.

990240312159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469211 (or 469199 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The spelling of 990240312159 in words is "nine hundred ninety billion, two hundred forty million, three hundred twelve thousand, one hundred fifty-nine".