12666116662 has 8 divisors (see below), whose sum is σ = 20116773576. Its totient is φ = 5960525472.

The previous prime is 12666116653. The next prime is 12666116693. The reversal of 12666116662 is 26661166621.

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

It is a super-2 number, since 2×12666116662² (a number of 21 digits) contains 22 as substring.

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, 186266388 + ... + 186266455.

It is an arithmetic number, because the mean of its divisors is an integer number (2514596697).

Almost surely, 2^12666116662 is an apocalyptic number.

12666116662 is a deficient number, since it is larger than the sum of its proper divisors (7450656914).

12666116662 is a wasteful number, since it uses less digits than its factorization.

12666116662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372532862.

The product of its digits is 186624, while the sum is 43.

The spelling of 12666116662 in words is "twelve billion, six hundred sixty-six million, one hundred sixteen thousand, six hundred sixty-two".