12666819910 has 8 divisors (see below), whose sum is σ = 22800275856. Its totient is φ = 5066727960.

The previous prime is 12666819899. The next prime is 12666819911. The reversal of 12666819910 is 1991866621.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12666819911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633340986 + ... + 633341005.

It is an arithmetic number, because the mean of its divisors is an integer number (2850034482).

Almost surely, 2^12666819910 is an apocalyptic number.

12666819910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12666819910 is a deficient number, since it is larger than the sum of its proper divisors (10133455946).

12666819910 is a wasteful number, since it uses less digits than its factorization.

12666819910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266681998.

The product of its (nonzero) digits is 279936, while the sum is 49.

The spelling of 12666819910 in words is "twelve billion, six hundred sixty-six million, eight hundred nineteen thousand, nine hundred ten".