20445504404 has 36 divisors (see below), whose sum is σ = 39568019904. Its totient is φ = 9235598112.

The previous prime is 20445504361. The next prime is 20445504433. The reversal of 20445504404 is 40440554402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 289982 + ... + 353525.

It is an arithmetic number, because the mean of its divisors is an integer number (1099111664).

Almost surely, 2^20445504404 is an apocalyptic number.

It is an amenable number.

20445504404 is a deficient number, since it is larger than the sum of its proper divisors (19122515500).

20445504404 is a wasteful number, since it uses less digits than its factorization.

20445504404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643584 (or 643569 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 32.

The spelling of 20445504404 in words is "twenty billion, four hundred forty-five million, five hundred four thousand, four hundred four".