20895344004 has 24 divisors (see below), whose sum is σ = 48965061600. Its totient is φ = 6935220544.

The previous prime is 20895343981. The next prime is 20895344117. The reversal of 20895344004 is 40044359802.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3733854 + ... + 3739445.

It is an arithmetic number, because the mean of its divisors is an integer number (2040210900).

Almost surely, 2^20895344004 is an apocalyptic number.

It is an amenable number.

20895344004 is an abundant number, since it is smaller than the sum of its proper divisors (28069717596).

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

20895344004 is a wasteful number, since it uses less digits than its factorization.

20895344004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7473539 (or 7473537 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 20895344004 in words is "twenty billion, eight hundred ninety-five million, three hundred forty-four thousand, four".