20536884072 has 128 divisors (see below), whose sum is σ = 58145817600. Its totient is φ = 6715030464.

The previous prime is 20536884059. The next prime is 20536884089. The reversal of 20536884072 is 27048863502.

20536884072 is a `hidden beast` number, since 2 + 0 + 536 + 8 + 8 + 40 + 72 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2376223 + ... + 2384849.

It is an arithmetic number, because the mean of its divisors is an integer number (454264200).

Almost surely, 2^20536884072 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 20536884072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29072908800).

20536884072 is an abundant number, since it is smaller than the sum of its proper divisors (37608933528).

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

20536884072 is a wasteful number, since it uses less digits than its factorization.

20536884072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8852 (or 8842 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 20536884072 in words is "twenty billion, five hundred thirty-six million, eight hundred eighty-four thousand, seventy-two".