669317713951 has 2 divisors, whose sum is σ = 669317713952. Its totient is φ = 669317713950.

The previous prime is 669317713949. The next prime is 669317714011. The reversal of 669317713951 is 159317713966.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 669317713951 - 2¹ = 669317713949 is a prime.

Together with 669317713949, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (669317713921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334658856975 + 334658856976.

It is an arithmetic number, because the mean of its divisors is an integer number (334658856976).

Almost surely, 2^669317713951 is an apocalyptic number.

669317713951 is a deficient number, since it is larger than the sum of its proper divisors (1).

669317713951 is an equidigital number, since it uses as much as digits as its factorization.

669317713951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6429780, while the sum is 58.

The spelling of 669317713951 in words is "six hundred sixty-nine billion, three hundred seventeen million, seven hundred thirteen thousand, nine hundred fifty-one".