20302556056 has 8 divisors (see below), whose sum is σ = 38067292620. Its totient is φ = 10151278024.

The previous prime is 20302556041. The next prime is 20302556069. The reversal of 20302556056 is 65065520302.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1268909746 + ... + 1268909761.

Almost surely, 2^20302556056 is an apocalyptic number.

It is an amenable number.

20302556056 is a deficient number, since it is larger than the sum of its proper divisors (17764736564).

20302556056 is a wasteful number, since it uses less digits than its factorization.

20302556056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2537819513 (or 2537819509 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 34.

It can be divided in two parts, 203025 and 56056, that added together give a square (259081 = 509²).

The spelling of 20302556056 in words is "twenty billion, three hundred two million, five hundred fifty-six thousand, fifty-six".