12666251832 has 32 divisors (see below), whose sum is σ = 34101448080. Its totient is φ = 3897308160.

The previous prime is 12666251831. The next prime is 12666251833. The reversal of 12666251832 is 23815266621.

It is an interprime number because it is at equal distance from previous prime (12666251831) and next prime (12666251833).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12666251831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20298169 + ... + 20298792.

Almost surely, 2^12666251832 is an apocalyptic number.

12666251832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12666251832 is an abundant number, since it is smaller than the sum of its proper divisors (21435196248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12666251832 is a wasteful number, since it uses less digits than its factorization.

12666251832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40596983 (or 40596979 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The spelling of 12666251832 in words is "twelve billion, six hundred sixty-six million, two hundred fifty-one thousand, eight hundred thirty-two".