64334466443477 has 2 divisors, whose sum is σ = 64334466443478. Its totient is φ = 64334466443476.

The previous prime is 64334466443297. The next prime is 64334466443647. The reversal of 64334466443477 is 77434466443346.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63344184716836 + 990281726641 = 7958906^2 + 995129^2 .

It is a cyclic number.

It is not a de Polignac number, because 64334466443477 - 2¹⁸ = 64334466181333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64334466440477) 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, 32167233221738 + 32167233221739.

It is an arithmetic number, because the mean of its divisors is an integer number (32167233221739).

Almost surely, 2^{64334466443477} is an apocalyptic number.

It is an amenable number.

64334466443477 is a deficient number, since it is larger than the sum of its proper divisors (1).

64334466443477 is an equidigital number, since it uses as much as digits as its factorization.

64334466443477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1170505728, while the sum is 65.

The spelling of 64334466443477 in words is "sixty-four trillion, three hundred thirty-four billion, four hundred sixty-six million, four hundred forty-three thousand, four hundred seventy-seven".