20577013456 has 40 divisors (see below), whose sum is σ = 40215997440. Its totient is φ = 10198831104.

The previous prime is 20577013453. The next prime is 20577013529. The reversal of 20577013456 is 65431077502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20577013451) by changing a digit.

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, 2859495 + ... + 2866681.

It is an arithmetic number, because the mean of its divisors is an integer number (1005399936).

Almost surely, 2^20577013456 is an apocalyptic number.

It is an amenable number.

20577013456 is a deficient number, since it is larger than the sum of its proper divisors (19638983984).

20577013456 is a wasteful number, since it uses less digits than its factorization.

20577013456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8731 (or 8725 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 40.

The spelling of 20577013456 in words is "twenty billion, five hundred seventy-seven million, thirteen thousand, four hundred fifty-six".