64726006012439 has 2 divisors, whose sum is σ = 64726006012440. Its totient is φ = 64726006012438.

The previous prime is 64726006012361. The next prime is 64726006012441. The reversal of 64726006012439 is 93421060062746.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64726006012439 is a prime.

It is a Sophie Germain prime.

Together with 64726006012441, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64726006012489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32363003006219 + 32363003006220.

It is an arithmetic number, because the mean of its divisors is an integer number (32363003006220).

Almost surely, 2^{64726006012439} is an apocalyptic number.

64726006012439 is a deficient number, since it is larger than the sum of its proper divisors (1).

64726006012439 is an equidigital number, since it uses as much as digits as its factorization.

64726006012439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 50.

The spelling of 64726006012439 in words is "sixty-four trillion, seven hundred twenty-six billion, six million, twelve thousand, four hundred thirty-nine".