66496764679 has 2 divisors, whose sum is σ = 66496764680. Its totient is φ = 66496764678.

The previous prime is 66496764673. The next prime is 66496764683. The reversal of 66496764679 is 97646769466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66496764679 - 2³³ = 57906830087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66496764673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33248382339 + 33248382340.

It is an arithmetic number, because the mean of its divisors is an integer number (33248382340).

Almost surely, 2^66496764679 is an apocalyptic number.

66496764679 is a deficient number, since it is larger than the sum of its proper divisors (1).

66496764679 is an equidigital number, since it uses as much as digits as its factorization.

66496764679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 493807104, while the sum is 70.

The spelling of 66496764679 in words is "sixty-six billion, four hundred ninety-six million, seven hundred sixty-four thousand, six hundred seventy-nine".