20536583364 has 72 divisors (see below), whose sum is σ = 56947756320. Its totient is φ = 6188419200.

The previous prime is 20536583359. The next prime is 20536583377. The reversal of 20536583364 is 46338563502.

20536583364 is a `hidden beast` number, since 2 + 0 + 5 + 3 + 6 + 583 + 3 + 64 = 666.

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 23 ways as a sum of consecutive naturals, for example, 73977 + ... + 215744.

It is an arithmetic number, because the mean of its divisors is an integer number (790941060).

Almost surely, 2^20536583364 is an apocalyptic number.

It is an amenable number.

20536583364 is an abundant number, since it is smaller than the sum of its proper divisors (36411172956).

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

20536583364 is a wasteful number, since it uses less digits than its factorization.

20536583364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289921 (or 289916 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 45.

The spelling of 20536583364 in words is "twenty billion, five hundred thirty-six million, five hundred eighty-three thousand, three hundred sixty-four".