669990111110 has 8 divisors (see below), whose sum is σ = 1205982200016. Its totient is φ = 267996044440.

The previous prime is 669990111041. The next prime is 669990111199. The reversal of 669990111110 is 11111099966.

It is a happy number.

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

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 3 ways as a sum of consecutive naturals, for example, 33499505546 + ... + 33499505565.

It is an arithmetic number, because the mean of its divisors is an integer number (150747775002).

Almost surely, 2^669990111110 is an apocalyptic number.

669990111110 is a deficient number, since it is larger than the sum of its proper divisors (535992088906).

669990111110 is a wasteful number, since it uses less digits than its factorization.

669990111110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66999011118.

The product of its (nonzero) digits is 26244, while the sum is 44.

The spelling of 669990111110 in words is "six hundred sixty-nine billion, nine hundred ninety million, one hundred eleven thousand, one hundred ten".