669967769966 has 16 divisors (see below), whose sum is σ = 1104679686528. Its totient is φ = 302206140600.

The previous prime is 669967769953. The next prime is 669967769983.

It is a happy number.

669967769966 is nontrivially palindromic in base 10.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 116230250 + ... + 116236013.

It is an arithmetic number, because the mean of its divisors is an integer number (69042480408).

Almost surely, 2^669967769966 is an apocalyptic number.

669967769966 is a deficient number, since it is larger than the sum of its proper divisors (434711916562).

669967769966 is a wasteful number, since it uses less digits than its factorization.

669967769966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232466407.

The product of its digits is 14999390784, while the sum is 86.

The spelling of 669967769966 in words is "six hundred sixty-nine billion, nine hundred sixty-seven million, seven hundred sixty-nine thousand, nine hundred sixty-six".