64256243623801 has 2 divisors, whose sum is σ = 64256243623802. Its totient is φ = 64256243623800.

The previous prime is 64256243623783. The next prime is 64256243623823. The reversal of 64256243623801 is 10832634265246.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63225716131600 + 1030527492201 = 7951460^2 + 1015149^2 .

It is a cyclic number.

It is not a de Polignac number, because 64256243623801 - 2¹¹ = 64256243621753 is a prime.

It is not a weakly prime, because it can be changed into another prime (64256243623841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32128121811900 + 32128121811901.

It is an arithmetic number, because the mean of its divisors is an integer number (32128121811901).

Almost surely, 2^{64256243623801} is an apocalyptic number.

It is an amenable number.

64256243623801 is a deficient number, since it is larger than the sum of its proper divisors (1).

64256243623801 is an equidigital number, since it uses as much as digits as its factorization.

64256243623801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9953280, while the sum is 52.

The spelling of 64256243623801 in words is "sixty-four trillion, two hundred fifty-six billion, two hundred forty-three million, six hundred twenty-three thousand, eight hundred one".