669020044331 has 2 divisors, whose sum is σ = 669020044332. Its totient is φ = 669020044330.

The previous prime is 669020044307. The next prime is 669020044333. The reversal of 669020044331 is 133440020966.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 669020044331 - 2²⁶ = 668952935467 is a prime.

It is a super-2 number, since 2×669020044331² (a number of 24 digits) contains 22 as substring.

Together with 669020044333, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (669020044333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334510022165 + 334510022166.

It is an arithmetic number, because the mean of its divisors is an integer number (334510022166).

Almost surely, 2^669020044331 is an apocalyptic number.

669020044331 is a deficient number, since it is larger than the sum of its proper divisors (1).

669020044331 is an equidigital number, since it uses as much as digits as its factorization.

669020044331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 38.

The spelling of 669020044331 in words is "six hundred sixty-nine billion, twenty million, forty-four thousand, three hundred thirty-one".