990232346432321 has 16 divisors (see below), whose sum is σ = 1001643261292800. Its totient is φ = 978827796659328.

The previous prime is 990232346432293. The next prime is 990232346432449. The reversal of 990232346432321 is 123234643232099.

It is a cyclic number.

It is not a de Polignac number, because 990232346432321 - 2¹⁴ = 990232346415937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990232306432321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4906970795 + ... + 4907172591.

It is an arithmetic number, because the mean of its divisors is an integer number (62602703830800).

Almost surely, 2^{990232346432321} is an apocalyptic number.

It is an amenable number.

990232346432321 is a deficient number, since it is larger than the sum of its proper divisors (11410914860479).

990232346432321 is a wasteful number, since it uses less digits than its factorization.

990232346432321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217288.

The product of its (nonzero) digits is 10077696, while the sum is 53.

The spelling of 990232346432321 in words is "nine hundred ninety trillion, two hundred thirty-two billion, three hundred forty-six million, four hundred thirty-two thousand, three hundred twenty-one".