564217274642 has 54 divisors (see below), whose sum is σ = 1029479106663. Its totient is φ = 231223927704.

The previous prime is 564217274641. The next prime is 564217274683. The reversal of 564217274642 is 246472712465.

It can be written as a sum of positive squares in only one way, i.e., 282108637321 + 282108637321 = 531139^2 + 531139^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=531139.

It is a super-2 number, since 2×564217274642² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (564217274641) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 171025109 + ... + 171028407.

Almost surely, 2^564217274642 is an apocalyptic number.

564217274642 is a deficient number, since it is larger than the sum of its proper divisors (465261832021).

564217274642 is an frugal number, since it uses more digits than its factorization.

564217274642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6660 (or 3331 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 50.

Multiplying 564217274642 by its sum of digits (50), we get a square (28210863732100 = 5311390²).

The spelling of 564217274642 in words is "five hundred sixty-four billion, two hundred seventeen million, two hundred seventy-four thousand, six hundred forty-two".