9923792490645 has 16 divisors (see below), whose sum is σ = 17321528711232. Its totient is φ = 4811535752960.

The previous prime is 9923792490637. The next prime is 9923792490659. The reversal of 9923792490645 is 5460942973299.

It is not a de Polignac number, because 9923792490645 - 2³ = 9923792490637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9923792490645.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30072098292 + ... + 30072098621.

It is an arithmetic number, because the mean of its divisors is an integer number (1082595544452).

Almost surely, 2^{9923792490645} is an apocalyptic number.

It is an amenable number.

9923792490645 is a deficient number, since it is larger than the sum of its proper divisors (7397736220587).

9923792490645 is a wasteful number, since it uses less digits than its factorization.

9923792490645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60144196932.

The product of its (nonzero) digits is 264539520, while the sum is 69.

The spelling of 9923792490645 in words is "nine trillion, nine hundred twenty-three billion, seven hundred ninety-two million, four hundred ninety thousand, six hundred forty-five".