12666875690 has 16 divisors (see below), whose sum is σ = 26057572992. Its totient is φ = 4342928784.

The previous prime is 12666875687. The next prime is 12666875717. The reversal of 12666875690 is 9657866621.

It is a happy number.

It is a super-2 number, since 2×12666875690² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90477614 + ... + 90477753.

It is an arithmetic number, because the mean of its divisors is an integer number (1628598312).

Almost surely, 2^12666875690 is an apocalyptic number.

12666875690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12666875690 is an abundant number, since it is smaller than the sum of its proper divisors (13390697302).

12666875690 is a wasteful number, since it uses less digits than its factorization.

12666875690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180955381.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 12666875690 in words is "twelve billion, six hundred sixty-six million, eight hundred seventy-five thousand, six hundred ninety".