20564407332 has 120 divisors (see below), whose sum is σ = 64673125440. Its totient is φ = 5566294080.

The previous prime is 20564407321. The next prime is 20564407363. The reversal of 20564407332 is 23370446502.

20564407332 is a `hidden beast` number, since 2 + 0 + 5 + 644 + 0 + 7 + 3 + 3 + 2 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 195519 + ... + 281702.

It is an arithmetic number, because the mean of its divisors is an integer number (538942712).

Almost surely, 2^20564407332 is an apocalyptic number.

It is an amenable number.

20564407332 is an abundant number, since it is smaller than the sum of its proper divisors (44108718108).

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

20564407332 is a wasteful number, since it uses less digits than its factorization.

20564407332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477263 (or 477252 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 36.

The spelling of 20564407332 in words is "twenty billion, five hundred sixty-four million, four hundred seven thousand, three hundred thirty-two".