20650560556 has 24 divisors (see below), whose sum is σ = 36480684240. Its totient is φ = 10227563712.

The previous prime is 20650560547. The next prime is 20650560587. The reversal of 20650560556 is 65506505602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2698071 + ... + 2705713.

It is an arithmetic number, because the mean of its divisors is an integer number (1520028510).

Almost surely, 2^20650560556 is an apocalyptic number.

It is an amenable number.

20650560556 is a deficient number, since it is larger than the sum of its proper divisors (15830123684).

20650560556 is a wasteful number, since it uses less digits than its factorization.

20650560556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13953 (or 13951 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 40.

The spelling of 20650560556 in words is "twenty billion, six hundred fifty million, five hundred sixty thousand, five hundred fifty-six".