20577160556 has 24 divisors (see below), whose sum is σ = 36106358736. Its totient is φ = 10261094400.

The previous prime is 20577160537. The next prime is 20577160577. The reversal of 20577160556 is 65506177502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2816300 + ... + 2823596.

It is an arithmetic number, because the mean of its divisors is an integer number (1504431614).

Almost surely, 2^20577160556 is an apocalyptic number.

It is an amenable number.

20577160556 is a deficient number, since it is larger than the sum of its proper divisors (15529198180).

20577160556 is a wasteful number, since it uses less digits than its factorization.

20577160556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9089 (or 9087 counting only the distinct ones).

The product of its (nonzero) digits is 441000, while the sum is 44.

The spelling of 20577160556 in words is "twenty billion, five hundred seventy-seven million, one hundred sixty thousand, five hundred fifty-six".