12666920990 has 8 divisors (see below), whose sum is σ = 22800457800. Its totient is φ = 5066768392.

The previous prime is 12666920971. The next prime is 12666920993. The reversal of 12666920990 is 9902966621.

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 (12666920993) 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, 633346040 + ... + 633346059.

It is an arithmetic number, because the mean of its divisors is an integer number (2850057225).

Almost surely, 2^12666920990 is an apocalyptic number.

12666920990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12666920990 is a deficient number, since it is larger than the sum of its proper divisors (10133536810).

12666920990 is a wasteful number, since it uses less digits than its factorization.

12666920990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266692106.

The product of its (nonzero) digits is 629856, while the sum is 50.

The spelling of 12666920990 in words is "twelve billion, six hundred sixty-six million, nine hundred twenty thousand, nine hundred ninety".