465221946589 has 2 divisors, whose sum is σ = 465221946590. Its totient is φ = 465221946588.

The previous prime is 465221946559. The next prime is 465221946613. The reversal of 465221946589 is 985649122564.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 303523864900 + 161698081689 = 550930^2 + 402117^2 .

It is a cyclic number.

It is not a de Polignac number, because 465221946589 - 2⁵ = 465221946557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (465221946529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 232610973294 + 232610973295.

It is an arithmetic number, because the mean of its divisors is an integer number (232610973295).

Almost surely, 2^465221946589 is an apocalyptic number.

It is an amenable number.

465221946589 is a deficient number, since it is larger than the sum of its proper divisors (1).

465221946589 is an equidigital number, since it uses as much as digits as its factorization.

465221946589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37324800, while the sum is 61.

The spelling of 465221946589 in words is "four hundred sixty-five billion, two hundred twenty-one million, nine hundred forty-six thousand, five hundred eighty-nine".