664464572637143 has 2 divisors, whose sum is σ = 664464572637144. Its totient is φ = 664464572637142.

The previous prime is 664464572637137. The next prime is 664464572637233. The reversal of 664464572637143 is 341736275464466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 664464572637143 - 2⁴ = 664464572637127 is a prime.

It is a super-2 number, since 2×664464572637143² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664464572633143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332232286318571 + 332232286318572.

It is an arithmetic number, because the mean of its divisors is an integer number (332232286318572).

Almost surely, 2^{664464572637143} is an apocalyptic number.

664464572637143 is a deficient number, since it is larger than the sum of its proper divisors (1).

664464572637143 is an equidigital number, since it uses as much as digits as its factorization.

664464572637143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1463132160, while the sum is 68.

The spelling of 664464572637143 in words is "six hundred sixty-four trillion, four hundred sixty-four billion, five hundred seventy-two million, six hundred thirty-seven thousand, one hundred forty-three".