669020044319 has 8 divisors (see below), whose sum is σ = 730131664512. Its totient is φ = 607957026840.

The previous prime is 669020044307. The next prime is 669020044331. The reversal of 669020044319 is 913440020966.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (669020044307) and next prime (669020044331).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-669020044319 is a prime.

It is a super-2 number, since 2×669020044319² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 669020044319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669020044519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12121889 + ... + 12176954.

It is an arithmetic number, because the mean of its divisors is an integer number (91266458064).

Almost surely, 2^669020044319 is an apocalyptic number.

669020044319 is a deficient number, since it is larger than the sum of its proper divisors (61111620193).

669020044319 is a wasteful number, since it uses less digits than its factorization.

669020044319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24301357.

The product of its (nonzero) digits is 279936, while the sum is 44.

The spelling of 669020044319 in words is "six hundred sixty-nine billion, twenty million, forty-four thousand, three hundred nineteen".