664112373551999 has 2 divisors, whose sum is σ = 664112373552000. Its totient is φ = 664112373551998.

The previous prime is 664112373551989. The next prime is 664112373552059. The reversal of 664112373551999 is 999155373211466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 664112373551999 - 2²⁸ = 664112105116543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664112373551909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332056186775999 + 332056186776000.

It is an arithmetic number, because the mean of its divisors is an integer number (332056186776000).

Almost surely, 2^{664112373551999} is an apocalyptic number.

664112373551999 is a deficient number, since it is larger than the sum of its proper divisors (1).

664112373551999 is an equidigital number, since it uses as much as digits as its factorization.

664112373551999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 330674400, while the sum is 71.

The spelling of 664112373551999 in words is "six hundred sixty-four trillion, one hundred twelve billion, three hundred seventy-three million, five hundred fifty-one thousand, nine hundred ninety-nine".