64464568237 has 2 divisors, whose sum is σ = 64464568238. Its totient is φ = 64464568236.

The previous prime is 64464568219. The next prime is 64464568243. The reversal of 64464568237 is 73286546446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35170876521 + 29293691716 = 187539^2 + 171154^2 .

It is a cyclic number.

It is not a de Polignac number, because 64464568237 - 2¹⁵ = 64464535469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64464568297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32232284118 + 32232284119.

It is an arithmetic number, because the mean of its divisors is an integer number (32232284119).

Almost surely, 2^64464568237 is an apocalyptic number.

It is an amenable number.

64464568237 is a deficient number, since it is larger than the sum of its proper divisors (1).

64464568237 is an equidigital number, since it uses as much as digits as its factorization.

64464568237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23224320, while the sum is 55.

The spelling of 64464568237 in words is "sixty-four billion, four hundred sixty-four million, five hundred sixty-eight thousand, two hundred thirty-seven".