64465821291293 has 2 divisors, whose sum is σ = 64465821291294. Its totient is φ = 64465821291292.

The previous prime is 64465821291199. The next prime is 64465821291299. The reversal of 64465821291293 is 39219212856446.

64465821291293 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38913180469849 + 25552640821444 = 6238043^2 + 5054962^2 .

It is a cyclic number.

It is not a de Polignac number, because 64465821291293 - 2¹⁴ = 64465821274909 is a prime.

It is a super-2 number, since 2×64465821291293² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64465821291299) 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, 32232910645646 + 32232910645647.

It is an arithmetic number, because the mean of its divisors is an integer number (32232910645647).

Almost surely, 2^{64465821291293} is an apocalyptic number.

It is an amenable number.

64465821291293 is a deficient number, since it is larger than the sum of its proper divisors (1).

64465821291293 is an equidigital number, since it uses as much as digits as its factorization.

64465821291293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44789760, while the sum is 62.

The spelling of 64465821291293 in words is "sixty-four trillion, four hundred sixty-five billion, eight hundred twenty-one million, two hundred ninety-one thousand, two hundred ninety-three".