64927944743747 has 2 divisors, whose sum is σ = 64927944743748. Its totient is φ = 64927944743746.

The previous prime is 64927944743729. The next prime is 64927944743803. The reversal of 64927944743747 is 74734744972946.

It is a happy number.

64927944743747 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 64927944743747 - 2²⁰ = 64927943695171 is a prime.

It is not a weakly prime, because it can be changed into another prime (64927944745747) 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, 32463972371873 + 32463972371874.

It is an arithmetic number, because the mean of its divisors is an integer number (32463972371874).

Almost surely, 2^{64927944743747} is an apocalyptic number.

64927944743747 is a deficient number, since it is larger than the sum of its proper divisors (1).

64927944743747 is an equidigital number, since it uses as much as digits as its factorization.

64927944743747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7169347584, while the sum is 77.

The spelling of 64927944743747 in words is "sixty-four trillion, nine hundred twenty-seven billion, nine hundred forty-four million, seven hundred forty-three thousand, seven hundred forty-seven".