64622066417 has 2 divisors, whose sum is σ = 64622066418. Its totient is φ = 64622066416.

The previous prime is 64622066407. The next prime is 64622066441. The reversal of 64622066417 is 71466022646.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56639716081 + 7982350336 = 237991^2 + 89344^2 .

It is a cyclic number.

It is not a de Polignac number, because 64622066417 - 2¹⁴ = 64622050033 is a prime.

It is a super-2 number, since 2×64622066417² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64622066407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32311033208 + 32311033209.

It is an arithmetic number, because the mean of its divisors is an integer number (32311033209).

Almost surely, 2^64622066417 is an apocalyptic number.

It is an amenable number.

64622066417 is a deficient number, since it is larger than the sum of its proper divisors (1).

64622066417 is an equidigital number, since it uses as much as digits as its factorization.

64622066417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 44.

The spelling of 64622066417 in words is "sixty-four billion, six hundred twenty-two million, sixty-six thousand, four hundred seventeen".