20045717792 has 24 divisors (see below), whose sum is σ = 40825871100. Its totient is φ = 9677242624.

The previous prime is 20045717789. The next prime is 20045717803. The reversal of 20045717792 is 29771754002.

It can be written as a sum of positive squares in 2 ways, for example, as 17412385936 + 2633331856 = 131956^2 + 51316^2 .

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 3 ways as a sum of consecutive naturals, for example, 10799567 + ... + 10801422.

Almost surely, 2^20045717792 is an apocalyptic number.

It is an amenable number.

20045717792 is an abundant number, since it is smaller than the sum of its proper divisors (20780153308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20045717792 is a wasteful number, since it uses less digits than its factorization.

20045717792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21601028 (or 21601020 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 44.

The spelling of 20045717792 in words is "twenty billion, forty-five million, seven hundred seventeen thousand, seven hundred ninety-two".