20227557056 has 112 divisors (see below), whose sum is σ = 46796504832. Its totient is φ = 8495539200.

The previous prime is 20227557041. The next prime is 20227557061. The reversal of 20227557056 is 65075572202.

It is a tau number, because it is divible by the number of its divisors (112).

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, 8388491 + ... + 8390901.

It is an arithmetic number, because the mean of its divisors is an integer number (417825936).

Almost surely, 2^20227557056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20227557056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23398252416).

20227557056 is an abundant number, since it is smaller than the sum of its proper divisors (26568947776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20227557056 is a wasteful number, since it uses less digits than its factorization.

20227557056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2798 (or 2788 counting only the distinct ones).

The product of its (nonzero) digits is 294000, while the sum is 41.

The spelling of 20227557056 in words is "twenty billion, two hundred twenty-seven million, five hundred fifty-seven thousand, fifty-six".