64433824913 has 2 divisors, whose sum is σ = 64433824914. Its totient is φ = 64433824912.

The previous prime is 64433824909. The next prime is 64433824943. The reversal of 64433824913 is 31942833446.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62166446224 + 2267378689 = 249332^2 + 47617^2 .

It is a cyclic number.

It is not a de Polignac number, because 64433824913 - 2² = 64433824909 is a prime.

It is not a weakly prime, because it can be changed into another prime (64433824943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32216912456 + 32216912457.

It is an arithmetic number, because the mean of its divisors is an integer number (32216912457).

Almost surely, 2^64433824913 is an apocalyptic number.

It is an amenable number.

64433824913 is a deficient number, since it is larger than the sum of its proper divisors (1).

64433824913 is an equidigital number, since it uses as much as digits as its factorization.

64433824913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1492992, while the sum is 47.

The spelling of 64433824913 in words is "sixty-four billion, four hundred thirty-three million, eight hundred twenty-four thousand, nine hundred thirteen".