64463369273 has 2 divisors, whose sum is σ = 64463369274. Its totient is φ = 64463369272.

The previous prime is 64463369239. The next prime is 64463369279. The reversal of 64463369273 is 37296336446.

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., 64387540009 + 75829264 = 253747^2 + 8708^2 .

It is a cyclic number.

It is not a de Polignac number, because 64463369273 - 2⁸ = 64463369017 is a prime.

It is not a weakly prime, because it can be changed into another prime (64463369279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32231684636 + 32231684637.

It is an arithmetic number, because the mean of its divisors is an integer number (32231684637).

Almost surely, 2^64463369273 is an apocalyptic number.

It is an amenable number.

64463369273 is a deficient number, since it is larger than the sum of its proper divisors (1).

64463369273 is an equidigital number, since it uses as much as digits as its factorization.

64463369273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11757312, while the sum is 53.

The spelling of 64463369273 in words is "sixty-four billion, four hundred sixty-three million, three hundred sixty-nine thousand, two hundred seventy-three".