12764666197 has 4 divisors (see below), whose sum is σ = 12918457440. Its totient is φ = 12610874956.

The previous prime is 12764666191. The next prime is 12764666261. The reversal of 12764666197 is 79166646721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12764666197 - 2¹⁵ = 12764633429 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 (12764666191) 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, 76895497 + ... + 76895662.

It is an arithmetic number, because the mean of its divisors is an integer number (3229614360).

Almost surely, 2^12764666197 is an apocalyptic number.

It is an amenable number.

12764666197 is a deficient number, since it is larger than the sum of its proper divisors (153791243).

12764666197 is an equidigital number, since it uses as much as digits as its factorization.

12764666197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153791242.

The product of its digits is 4572288, while the sum is 55.

The spelling of 12764666197 in words is "twelve billion, seven hundred sixty-four million, six hundred sixty-six thousand, one hundred ninety-seven".