667273372793 has 2 divisors, whose sum is σ = 667273372794. Its totient is φ = 667273372792.

The previous prime is 667273372721. The next prime is 667273372817. The reversal of 667273372793 is 397273372766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 375244455184 + 292028917609 = 612572^2 + 540397^2 .

It is a cyclic number.

It is not a de Polignac number, because 667273372793 - 2⁸ = 667273372537 is a prime.

It is not a weakly prime, because it can be changed into another prime (667273372393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333636686396 + 333636686397.

It is an arithmetic number, because the mean of its divisors is an integer number (333636686397).

Almost surely, 2^667273372793 is an apocalyptic number.

It is an amenable number.

667273372793 is a deficient number, since it is larger than the sum of its proper divisors (1).

667273372793 is an equidigital number, since it uses as much as digits as its factorization.

667273372793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84015792, while the sum is 62.

The spelling of 667273372793 in words is "six hundred sixty-seven billion, two hundred seventy-three million, three hundred seventy-two thousand, seven hundred ninety-three".