564420043381 has 2 divisors, whose sum is σ = 564420043382. Its totient is φ = 564420043380.

The previous prime is 564420043337. The next prime is 564420043423. The reversal of 564420043381 is 183340024465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 424967091025 + 139452952356 = 651895^2 + 373434^2 .

It is a cyclic number.

It is not a de Polignac number, because 564420043381 - 2¹¹ = 564420041333 is a prime.

It is a super-2 number, since 2×564420043381² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (564420043331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282210021690 + 282210021691.

It is an arithmetic number, because the mean of its divisors is an integer number (282210021691).

Almost surely, 2^564420043381 is an apocalyptic number.

It is an amenable number.

564420043381 is a deficient number, since it is larger than the sum of its proper divisors (1).

564420043381 is an equidigital number, since it uses as much as digits as its factorization.

564420043381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 276480, while the sum is 40.

The spelling of 564420043381 in words is "five hundred sixty-four billion, four hundred twenty million, forty-three thousand, three hundred eighty-one".