669120516199 has 2 divisors, whose sum is σ = 669120516200. Its totient is φ = 669120516198.

The previous prime is 669120516139. The next prime is 669120516209. The reversal of 669120516199 is 991615021966.

It is a happy number.

669120516199 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 669120516199 - 2²⁷ = 668986298471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (669120516109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334560258099 + 334560258100.

It is an arithmetic number, because the mean of its divisors is an integer number (334560258100).

Almost surely, 2^669120516199 is an apocalyptic number.

669120516199 is a deficient number, since it is larger than the sum of its proper divisors (1).

669120516199 is an equidigital number, since it uses as much as digits as its factorization.

669120516199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1574640, while the sum is 55.

The spelling of 669120516199 in words is "six hundred sixty-nine billion, one hundred twenty million, five hundred sixteen thousand, one hundred ninety-nine".