669900031511768 has 16 divisors (see below), whose sum is σ = 1267178156954280. Its totient is φ = 331985856323968.

The previous prime is 669900031511717. The next prime is 669900031511813. The reversal of 669900031511768 is 867115130009966.

It is a self number, because there is not a number n which added to its sum of digits gives 669900031511768.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370519928030 + ... + 370519929837.

Almost surely, 2^{669900031511768} is an apocalyptic number.

It is an amenable number.

669900031511768 is a deficient number, since it is larger than the sum of its proper divisors (597278125442512).

669900031511768 is a wasteful number, since it uses less digits than its factorization.

669900031511768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741039857986 (or 741039857982 counting only the distinct ones).

The product of its (nonzero) digits is 14696640, while the sum is 62.

The spelling of 669900031511768 in words is "six hundred sixty-nine trillion, nine hundred billion, thirty-one million, five hundred eleven thousand, seven hundred sixty-eight".