669867418051387 has 2 divisors, whose sum is σ = 669867418051388. Its totient is φ = 669867418051386.

The previous prime is 669867418051301. The next prime is 669867418051397. The reversal of 669867418051387 is 783150814768966.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 669867418051387 - 2³⁵ = 669833058313019 is a prime.

It is not a weakly prime, because it can be changed into another prime (669867418051397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334933709025693 + 334933709025694.

It is an arithmetic number, because the mean of its divisors is an integer number (334933709025694).

Almost surely, 2^{669867418051387} is an apocalyptic number.

669867418051387 is a deficient number, since it is larger than the sum of its proper divisors (1).

669867418051387 is an equidigital number, since it uses as much as digits as its factorization.

669867418051387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2926264320, while the sum is 79.

The spelling of 669867418051387 in words is "six hundred sixty-nine trillion, eight hundred sixty-seven billion, four hundred eighteen million, fifty-one thousand, three hundred eighty-seven".