12690667399 has 4 divisors (see below), whose sum is σ = 13437177264. Its totient is φ = 11944157536.

The previous prime is 12690667349. The next prime is 12690667417. The reversal of 12690667399 is 99376609621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12690667399 - 2¹³ = 12690659207 is a prime.

It is a super-2 number, since 2×12690667399² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12690667349) 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 3 ways as a sum of consecutive naturals, for example, 373254907 + ... + 373254940.

It is an arithmetic number, because the mean of its divisors is an integer number (3359294316).

Almost surely, 2^12690667399 is an apocalyptic number.

12690667399 is a deficient number, since it is larger than the sum of its proper divisors (746509865).

12690667399 is an equidigital number, since it uses as much as digits as its factorization.

12690667399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746509864.

The product of its (nonzero) digits is 6613488, while the sum is 58.

The spelling of 12690667399 in words is "twelve billion, six hundred ninety million, six hundred sixty-seven thousand, three hundred ninety-nine".