990321414312001 has 4 divisors (see below), whose sum is σ = 990398898200404. Its totient is φ = 990243930423600.

The previous prime is 990321414311993. The next prime is 990321414312007. The reversal of 990321414312001 is 100213414123099.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 780227405367601 + 210094008944400 = 27932551^2 + 14494620^2 .

It is a cyclic number.

It is not a de Polignac number, because 990321414312001 - 2³ = 990321414311993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990321414312007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38741925030 + ... + 38741950591.

It is an arithmetic number, because the mean of its divisors is an integer number (247599724550101).

Almost surely, 2^{990321414312001} is an apocalyptic number.

It is an amenable number.

990321414312001 is a deficient number, since it is larger than the sum of its proper divisors (77483888403).

990321414312001 is a wasteful number, since it uses less digits than its factorization.

990321414312001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77483888402.

The product of its (nonzero) digits is 46656, while the sum is 40.

The spelling of 990321414312001 in words is "nine hundred ninety trillion, three hundred twenty-one billion, four hundred fourteen million, three hundred twelve thousand, one".