20056834560 has 320 divisors, whose sum is σ = 73557792000. Its totient is φ = 4567007232.

The previous prime is 20056834541. The next prime is 20056834561. The reversal of 20056834560 is 6543865002.

It is a tau number, because it is divible by the number of its divisors (320).

It is a super-2 number, since 2×20056834560² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20056834561) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 18761706 + ... + 18762774.

It is an arithmetic number, because the mean of its divisors is an integer number (229868100).

Almost surely, 2^20056834560 is an apocalyptic number.

20056834560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20056834560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36778896000).

20056834560 is an abundant number, since it is smaller than the sum of its proper divisors (53500957440).

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

20056834560 is a wasteful number, since it uses less digits than its factorization.

20056834560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451 (or 1435 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 20056834560 in words is "twenty billion, fifty-six million, eight hundred thirty-four thousand, five hundred sixty".