64522143263161 has 2 divisors, whose sum is σ = 64522143263162. Its totient is φ = 64522143263160.

The previous prime is 64522143263147. The next prime is 64522143263173. The reversal of 64522143263161 is 16136234122546.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59939632400761 + 4582510862400 = 7742069^2 + 2140680^2 .

It is a cyclic number.

It is not a de Polignac number, because 64522143263161 - 2²¹ = 64522141166009 is a prime.

It is not a weakly prime, because it can be changed into another prime (64522143269161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32261071631580 + 32261071631581.

It is an arithmetic number, because the mean of its divisors is an integer number (32261071631581).

Almost surely, 2^{64522143263161} is an apocalyptic number.

It is an amenable number.

64522143263161 is a deficient number, since it is larger than the sum of its proper divisors (1).

64522143263161 is an equidigital number, since it uses as much as digits as its factorization.

64522143263161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 46.

The spelling of 64522143263161 in words is "sixty-four trillion, five hundred twenty-two billion, one hundred forty-three million, two hundred sixty-three thousand, one hundred sixty-one".