664441134464467 has 2 divisors, whose sum is σ = 664441134464468. Its totient is φ = 664441134464466.

The previous prime is 664441134464389. The next prime is 664441134464479. The reversal of 664441134464467 is 764464431144466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 664441134464467 - 2¹⁹ = 664441133940179 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 664441134464399 and 664441134464408.

It is not a weakly prime, because it can be changed into another prime (664441134464267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332220567232233 + 332220567232234.

It is an arithmetic number, because the mean of its divisors is an integer number (332220567232234).

Almost surely, 2^{664441134464467} is an apocalyptic number.

664441134464467 is a deficient number, since it is larger than the sum of its proper divisors (1).

664441134464467 is an equidigital number, since it uses as much as digits as its factorization.

664441134464467 is an evil number, because the sum of its binary digits is even.

The product of its digits is 445906944, while the sum is 64.

The spelling of 664441134464467 in words is "six hundred sixty-four trillion, four hundred forty-one billion, one hundred thirty-four million, four hundred sixty-four thousand, four hundred sixty-seven".