669254886373 has 2 divisors, whose sum is σ = 669254886374. Its totient is φ = 669254886372.

The previous prime is 669254886371. The next prime is 669254886451. The reversal of 669254886373 is 373688452966.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 652271062689 + 16983823684 = 807633^2 + 130322^2 .

It is a cyclic number.

It is not a de Polignac number, because 669254886373 - 2¹ = 669254886371 is a prime.

Together with 669254886371, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 669254886299 and 669254886308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (669254886371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334627443186 + 334627443187.

It is an arithmetic number, because the mean of its divisors is an integer number (334627443187).

Almost surely, 2^669254886373 is an apocalyptic number.

It is an amenable number.

669254886373 is a deficient number, since it is larger than the sum of its proper divisors (1).

669254886373 is an equidigital number, since it uses as much as digits as its factorization.

669254886373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 313528320, while the sum is 67.

The spelling of 669254886373 in words is "six hundred sixty-nine billion, two hundred fifty-four million, eight hundred eighty-six thousand, three hundred seventy-three".