669325956427 has 4 divisors (see below), whose sum is σ = 670850617360. Its totient is φ = 667801295496.

The previous prime is 669325956421. The next prime is 669325956433. The reversal of 669325956427 is 724659523966.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (669325956421) and next prime (669325956433).

It is a cyclic number.

It is not a de Polignac number, because 669325956427 - 2³⁹ = 119570142539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (669325956421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 762329808 + ... + 762330685.

It is an arithmetic number, because the mean of its divisors is an integer number (167712654340).

Almost surely, 2^669325956427 is an apocalyptic number.

669325956427 is a deficient number, since it is larger than the sum of its proper divisors (1524660933).

669325956427 is a wasteful number, since it uses less digits than its factorization.

669325956427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524660932.

The product of its digits is 146966400, while the sum is 64.

The spelling of 669325956427 in words is "six hundred sixty-nine billion, three hundred twenty-five million, nine hundred fifty-six thousand, four hundred twenty-seven".