64622066441 has 2 divisors, whose sum is σ = 64622066442. Its totient is φ = 64622066440.

The previous prime is 64622066417. The next prime is 64622066447. The reversal of 64622066441 is 14466022646.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47076414841 + 17545651600 = 216971^2 + 132460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64622066441 is a prime.

It is a super-2 number, since 2×64622066441² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64622066447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32311033220 + 32311033221.

It is an arithmetic number, because the mean of its divisors is an integer number (32311033221).

Almost surely, 2^64622066441 is an apocalyptic number.

It is an amenable number.

64622066441 is a deficient number, since it is larger than the sum of its proper divisors (1).

64622066441 is an equidigital number, since it uses as much as digits as its factorization.

64622066441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 331776, while the sum is 41.

The spelling of 64622066441 in words is "sixty-four billion, six hundred twenty-two million, sixty-six thousand, four hundred forty-one".