564855531372 has 144 divisors (see below), whose sum is σ = 1611190089600. Its totient is φ = 171007135200.

The previous prime is 564855531293. The next prime is 564855531379. The reversal of 564855531372 is 273135558465.

564855531372 is a `hidden beast` number, since 5 + 6 + 4 + 8 + 5 + 553 + 13 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (564855531379) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14237379 + ... + 14276997.

Almost surely, 2^564855531372 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 564855531372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (805595044800).

564855531372 is an abundant number, since it is smaller than the sum of its proper divisors (1046334558228).

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

564855531372 is a wasteful number, since it uses less digits than its factorization.

564855531372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40745 (or 40726 counting only the distinct ones).

The product of its digits is 15120000, while the sum is 54.

The spelling of 564855531372 in words is "five hundred sixty-four billion, eight hundred fifty-five million, five hundred thirty-one thousand, three hundred seventy-two".