64191056706323 has 2 divisors, whose sum is σ = 64191056706324. Its totient is φ = 64191056706322.

The previous prime is 64191056706311. The next prime is 64191056706349. The reversal of 64191056706323 is 32360765019146.

64191056706323 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 64191056706323 - 2²⁰ = 64191055657747 is a prime.

It is a super-2 number, since 2×64191056706323² (a number of 28 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (64191056706373) 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, 32095528353161 + 32095528353162.

It is an arithmetic number, because the mean of its divisors is an integer number (32095528353162).

Almost surely, 2^{64191056706323} is an apocalyptic number.

64191056706323 is a deficient number, since it is larger than the sum of its proper divisors (1).

64191056706323 is an equidigital number, since it uses as much as digits as its factorization.

64191056706323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4898880, while the sum is 53.

The spelling of 64191056706323 in words is "sixty-four trillion, one hundred ninety-one billion, fifty-six million, seven hundred six thousand, three hundred twenty-three".