12661674759 has 16 divisors (see below), whose sum is σ = 18759769600. Its totient is φ = 8440336728.

The previous prime is 12661674757. The next prime is 12661674793. The reversal of 12661674759 is 95747616621.

12661674759 is a `hidden beast` number, since 1 + 2 + 6 + 6 + 167 + 475 + 9 = 666.

It is not a de Polignac number, because 12661674759 - 2¹ = 12661674757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12661674757) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 560322 + ... + 582480.

It is an arithmetic number, because the mean of its divisors is an integer number (1172485600).

Almost surely, 2^12661674759 is an apocalyptic number.

12661674759 is a deficient number, since it is larger than the sum of its proper divisors (6098094841).

12661674759 is a wasteful number, since it uses less digits than its factorization.

12661674759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43331 (or 43325 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The spelling of 12661674759 in words is "twelve billion, six hundred sixty-one million, six hundred seventy-four thousand, seven hundred fifty-nine".