64408372739 has 2 divisors, whose sum is σ = 64408372740. Its totient is φ = 64408372738.

The previous prime is 64408372681. The next prime is 64408372741. The reversal of 64408372739 is 93727380446.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64408372739 - 2²⁸ = 64139937283 is a prime.

It is a Sophie Germain prime.

Together with 64408372741, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64408372139) 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, 32204186369 + 32204186370.

It is an arithmetic number, because the mean of its divisors is an integer number (32204186370).

Almost surely, 2^64408372739 is an apocalyptic number.

64408372739 is a deficient number, since it is larger than the sum of its proper divisors (1).

64408372739 is an equidigital number, since it uses as much as digits as its factorization.

64408372739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6096384, while the sum is 53.

The spelling of 64408372739 in words is "sixty-four billion, four hundred eight million, three hundred seventy-two thousand, seven hundred thirty-nine".