20210606056 has 8 divisors (see below), whose sum is σ = 37894886370. Its totient is φ = 10105303024.

The previous prime is 20210605973. The next prime is 20210606057. The reversal of 20210606056 is 65060601202.

It can be written as a sum of positive squares in only one way, i.e., 12180653956 + 8029952100 = 110366^2 + 89610^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (20210606057) by changing a digit.

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 as a sum of consecutive naturals, namely, 1263162871 + ... + 1263162886.

Almost surely, 2^20210606056 is an apocalyptic number.

It is an amenable number.

20210606056 is a deficient number, since it is larger than the sum of its proper divisors (17684280314).

20210606056 is a wasteful number, since it uses less digits than its factorization.

20210606056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2526325763 (or 2526325759 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 20210606056 in words is "twenty billion, two hundred ten million, six hundred six thousand, fifty-six".