669330151877 has 2 divisors, whose sum is σ = 669330151878. Its totient is φ = 669330151876.

The previous prime is 669330151859. The next prime is 669330151879. The reversal of 669330151877 is 778151033966.

It is a Cunningham number, because it is equal to 818126²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 669330151876 + 1 = 818126^2 + 1^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-669330151877 is a prime.

Together with 669330151879, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (669330151879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334665075938 + 334665075939.

It is an arithmetic number, because the mean of its divisors is an integer number (334665075939).

Almost surely, 2^669330151877 is an apocalyptic number.

It is an amenable number.

669330151877 is a deficient number, since it is larger than the sum of its proper divisors (1).

669330151877 is an equidigital number, since it uses as much as digits as its factorization.

669330151877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5715360, while the sum is 56.

The spelling of 669330151877 in words is "six hundred sixty-nine billion, three hundred thirty million, one hundred fifty-one thousand, eight hundred seventy-seven".