564222143173721 has 2 divisors, whose sum is σ = 564222143173722. Its totient is φ = 564222143173720.

The previous prime is 564222143173697. The next prime is 564222143173751. The reversal of 564222143173721 is 127371341222465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 552378599485696 + 11843543688025 = 23502736^2 + 3441445^2 .

It is a cyclic number.

It is not a de Polignac number, because 564222143173721 - 2²² = 564222138979417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 564222143173721.

It is not a weakly prime, because it can be changed into another prime (564222143173751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282111071586860 + 282111071586861.

It is an arithmetic number, because the mean of its divisors is an integer number (282111071586861).

Almost surely, 2^{564222143173721} is an apocalyptic number.

It is an amenable number.

564222143173721 is a deficient number, since it is larger than the sum of its proper divisors (1).

564222143173721 is an equidigital number, since it uses as much as digits as its factorization.

564222143173721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3386880, while the sum is 50.

The spelling of 564222143173721 in words is "five hundred sixty-four trillion, two hundred twenty-two billion, one hundred forty-three million, one hundred seventy-three thousand, seven hundred twenty-one".