16820594908 has 24 divisors (see below), whose sum is σ = 31704527232. Its totient is φ = 7762329024.

The previous prime is 16820594891. The next prime is 16820594929. The reversal of 16820594908 is 80949502861.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

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, 497766 + ... + 530482.

It is an arithmetic number, because the mean of its divisors is an integer number (1321021968).

Almost surely, 2^16820594908 is an apocalyptic number.

It is an amenable number.

16820594908 is a deficient number, since it is larger than the sum of its proper divisors (14883932324).

16820594908 is a wasteful number, since it uses less digits than its factorization.

16820594908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42621 (or 42619 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 52.

The spelling of 16820594908 in words is "sixteen billion, eight hundred twenty million, five hundred ninety-four thousand, nine hundred eight".