990215112280 has 16 divisors (see below), whose sum is σ = 2227984002720. Its totient is φ = 396086044896.

The previous prime is 990215112259. The next prime is 990215112301. The reversal of 990215112280 is 82211512099.

990215112280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (990215112259) and next prime (990215112301).

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 24755377807 = 990215112280 / (9 + 9 + 0 + 2 + 1 + 5 + 1 + 1 + 2 + 2 + 8 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12377688864 + ... + 12377688943.

It is an arithmetic number, because the mean of its divisors is an integer number (139249000170).

Almost surely, 2^990215112280 is an apocalyptic number.

It is an amenable number.

990215112280 is an abundant number, since it is smaller than the sum of its proper divisors (1237768890440).

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

990215112280 is a wasteful number, since it uses less digits than its factorization.

990215112280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24755377818 (or 24755377814 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 40.

The spelling of 990215112280 in words is "nine hundred ninety billion, two hundred fifteen million, one hundred twelve thousand, two hundred eighty".