12006946549 has 18 divisors (see below), whose sum is σ = 13081866630. Its totient is φ = 11015125056.

The previous prime is 12006946547. The next prime is 12006946577. The reversal of 12006946549 is 94564960021.

It can be written as a sum of positive squares in 9 ways, for example, as 8586802225 + 3420144324 = 92665^2 + 58482^2 .

It is not a de Polignac number, because 12006946549 - 2¹ = 12006946547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12006946499 and 12006946508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12006946547) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 21556179 + ... + 21556735.

Almost surely, 2^12006946549 is an apocalyptic number.

It is an amenable number.

12006946549 is a deficient number, since it is larger than the sum of its proper divisors (1074920081).

12006946549 is an frugal number, since it uses more digits than its factorization.

12006946549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369 (or 799 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 12006946549 in words is "twelve billion, six million, nine hundred forty-six thousand, five hundred forty-nine".