990717251631344 has 40 divisors (see below), whose sum is σ = 1923363214188192. Its totient is φ = 494365487616000.

The previous prime is 990717251631337. The next prime is 990717251631389. The reversal of 990717251631344 is 443136152717099.

990717251631344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491152844 + ... + 493165844.

Almost surely, 2^{990717251631344} is an apocalyptic number.

It is an amenable number.

990717251631344 is a deficient number, since it is larger than the sum of its proper divisors (932645962556848).

990717251631344 is a wasteful number, since it uses less digits than its factorization.

990717251631344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2074665 (or 2074659 counting only the distinct ones).

The product of its (nonzero) digits is 34292160, while the sum is 62.

The spelling of 990717251631344 in words is "nine hundred ninety trillion, seven hundred seventeen billion, two hundred fifty-one million, six hundred thirty-one thousand, three hundred forty-four".