64492910494409 has 2 divisors, whose sum is σ = 64492910494410. Its totient is φ = 64492910494408.

The previous prime is 64492910494381. The next prime is 64492910494469. The reversal of 64492910494409 is 90449401929446.

64492910494409 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 can be written as a sum of positive squares in only one way, i.e., 53333034884809 + 11159875609600 = 7302947^2 + 3340640^2 .

It is a cyclic number.

It is not a de Polignac number, because 64492910494409 - 2⁴⁴ = 46900724449993 is a prime.

It is not a weakly prime, because it can be changed into another prime (64492910494469) 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, 32246455247204 + 32246455247205.

It is an arithmetic number, because the mean of its divisors is an integer number (32246455247205).

Almost surely, 2^{64492910494409} is an apocalyptic number.

It is an amenable number.

64492910494409 is a deficient number, since it is larger than the sum of its proper divisors (1).

64492910494409 is an equidigital number, since it uses as much as digits as its factorization.

64492910494409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80621568, while the sum is 65.

The spelling of 64492910494409 in words is "sixty-four trillion, four hundred ninety-two billion, nine hundred ten million, four hundred ninety-four thousand, four hundred nine".