20450059056 has 180 divisors, whose sum is σ = 66822455232. Its totient is φ = 5821224192.

The previous prime is 20450058983. The next prime is 20450059057. The reversal of 20450059056 is 65095005402.

20450059056 is a `hidden beast` number, since 20 + 45 + 0 + 0 + 590 + 5 + 6 = 666.

It is a super-2 number, since 2×20450059056² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 20450059056.

It is not an unprimeable number, because it can be changed into a prime (20450059057) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1949281 + ... + 1959743.

Almost surely, 2^20450059056 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 20450059056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33411227616).

20450059056 is an abundant number, since it is smaller than the sum of its proper divisors (46372396176).

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

20450059056 is a wasteful number, since it uses less digits than its factorization.

20450059056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10768 (or 10752 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 20450059056 in words is "twenty billion, four hundred fifty million, fifty-nine thousand, fifty-six".