12706566353949 has 64 divisors (see below), whose sum is σ = 19063059724800. Its totient is φ = 7474397478912.

The previous prime is 12706566353947. The next prime is 12706566353951. The reversal of 12706566353949 is 94935366560721.

It is an interprime number because it is at equal distance from previous prime (12706566353947) and next prime (12706566353951).

It is not a de Polignac number, because 12706566353949 - 2¹ = 12706566353947 is a prime.

It is a super-2 number, since 2×12706566353949² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12706566353949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12706566353947) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 480986389 + ... + 481012805.

It is an arithmetic number, because the mean of its divisors is an integer number (297860308200).

Almost surely, 2^{12706566353949} is an apocalyptic number.

It is an amenable number.

12706566353949 is a deficient number, since it is larger than the sum of its proper divisors (6356493370851).

12706566353949 is a wasteful number, since it uses less digits than its factorization.

12706566353949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30694.

The product of its (nonzero) digits is 220449600, while the sum is 66.

The spelling of 12706566353949 in words is "twelve trillion, seven hundred six billion, five hundred sixty-six million, three hundred fifty-three thousand, nine hundred forty-nine".