922641990993 has 12 divisors (see below), whose sum is σ = 1332743534980. Its totient is φ = 615076920576.

The previous prime is 922641990983. The next prime is 922641991021. The reversal of 922641990993 is 399099146229.

It can be written as a sum of positive squares in 2 ways, for example, as 858556055889 + 64085935104 = 926583^2 + 253152^2 .

It is not a de Polignac number, because 922641990993 - 2¹² = 922641986897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 922641990993.

It is not an unprimeable number, because it can be changed into a prime (922641990983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1144996 + ... + 1776597.

Almost surely, 2^922641990993 is an apocalyptic number.

It is an amenable number.

922641990993 is a deficient number, since it is larger than the sum of its proper divisors (410101543987).

922641990993 is a wasteful number, since it uses less digits than its factorization.

922641990993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2956688 (or 2956685 counting only the distinct ones).

The product of its (nonzero) digits is 17006112, while the sum is 63.

The spelling of 922641990993 in words is "nine hundred twenty-two billion, six hundred forty-one million, nine hundred ninety thousand, nine hundred ninety-three".