64644026225959 has 2 divisors, whose sum is σ = 64644026225960. Its totient is φ = 64644026225958.

The previous prime is 64644026225939. The next prime is 64644026226053. The reversal of 64644026225959 is 95952262044646.

64644026225959 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64644026225959 - 2¹⁵ = 64644026193191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64644026225959.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64644026225939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32322013112979 + 32322013112980.

It is an arithmetic number, because the mean of its divisors is an integer number (32322013112980).

Almost surely, 2^{64644026225959} is an apocalyptic number.

64644026225959 is a deficient number, since it is larger than the sum of its proper divisors (1).

64644026225959 is an equidigital number, since it uses as much as digits as its factorization.

64644026225959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 223948800, while the sum is 64.

The spelling of 64644026225959 in words is "sixty-four trillion, six hundred forty-four billion, twenty-six million, two hundred twenty-five thousand, nine hundred fifty-nine".