20556570710 has 32 divisors (see below), whose sum is σ = 39926537280. Its totient is φ = 7575182208.

The previous prime is 20556570709. The next prime is 20556570721. The reversal of 20556570710 is 1707565502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89162 + ... + 221501.

It is an arithmetic number, because the mean of its divisors is an integer number (1247704290).

Almost surely, 2^20556570710 is an apocalyptic number.

20556570710 is a deficient number, since it is larger than the sum of its proper divisors (19369966570).

20556570710 is a wasteful number, since it uses less digits than its factorization.

20556570710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311192.

The product of its (nonzero) digits is 73500, while the sum is 38.

The spelling of 20556570710 in words is "twenty billion, five hundred fifty-six million, five hundred seventy thousand, seven hundred ten".