12666126451 has 12 divisors (see below), whose sum is σ = 13927828096. Its totient is φ = 11510064720.

The previous prime is 12666126443. The next prime is 12666126467. The reversal of 12666126451 is 15462166621.

It is not a de Polignac number, because 12666126451 - 2³ = 12666126443 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12666121451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 304366 + ... + 343468.

Almost surely, 2^12666126451 is an apocalyptic number.

12666126451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12666126451 is a deficient number, since it is larger than the sum of its proper divisors (1261701645).

12666126451 is a wasteful number, since it uses less digits than its factorization.

12666126451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41802 (or 41791 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The spelling of 12666126451 in words is "twelve billion, six hundred sixty-six million, one hundred twenty-six thousand, four hundred fifty-one".