669077942321 has 16 divisors (see below), whose sum is σ = 692857440000. Its totient is φ = 645683246208.

The previous prime is 669077942311. The next prime is 669077942339. The reversal of 669077942321 is 123249770966.

It is a cyclic number.

It is not a de Polignac number, because 669077942321 - 2⁶ = 669077942257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (669077942311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5012555 + ... + 5144303.

It is an arithmetic number, because the mean of its divisors is an integer number (43303590000).

Almost surely, 2^669077942321 is an apocalyptic number.

It is an amenable number.

669077942321 is a deficient number, since it is larger than the sum of its proper divisors (23779497679).

669077942321 is a wasteful number, since it uses less digits than its factorization.

669077942321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133208.

The product of its (nonzero) digits is 6858432, while the sum is 56.

The spelling of 669077942321 in words is "six hundred sixty-nine billion, seventy-seven million, nine hundred forty-two thousand, three hundred twenty-one".