20017804926 has 16 divisors (see below), whose sum is σ = 45754982784. Its totient is φ = 5719372824.

The previous prime is 20017804909. The next prime is 20017804927. The reversal of 20017804926 is 62940871002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20017804927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238307160 + ... + 238307243.

It is an arithmetic number, because the mean of its divisors is an integer number (2859686424).

Almost surely, 2^20017804926 is an apocalyptic number.

20017804926 is an abundant number, since it is smaller than the sum of its proper divisors (25737177858).

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

20017804926 is a wasteful number, since it uses less digits than its factorization.

20017804926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476614415.

The product of its (nonzero) digits is 48384, while the sum is 39.

The spelling of 20017804926 in words is "twenty billion, seventeen million, eight hundred four thousand, nine hundred twenty-six".