20782594624 has 56 divisors (see below), whose sum is σ = 45006329088. Its totient is φ = 9443120640.

The previous prime is 20782594619. The next prime is 20782594661. The reversal of 20782594624 is 42649528702.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3307774 + ... + 3314050.

It is an arithmetic number, because the mean of its divisors is an integer number (803684448).

Almost surely, 2^20782594624 is an apocalyptic number.

It is an amenable number.

20782594624 is an abundant number, since it is smaller than the sum of its proper divisors (24223734464).

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

20782594624 is a wasteful number, since it uses less digits than its factorization.

20782594624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11003 (or 10993 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 20782594624 in words is "twenty billion, seven hundred eighty-two million, five hundred ninety-four thousand, six hundred twenty-four".