12761655817 has 8 divisors (see below), whose sum is σ = 12835412480. Its totient is φ = 12687978240.

The previous prime is 12761655779. The next prime is 12761655839. The reversal of 12761655817 is 71855616721.

It is a happy number.

12761655817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12761655817 - 2³¹ = 10614172169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12761655847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320692 + ... + 358282.

It is an arithmetic number, because the mean of its divisors is an integer number (1604426560).

Almost surely, 2^12761655817 is an apocalyptic number.

It is an amenable number.

12761655817 is a deficient number, since it is larger than the sum of its proper divisors (73756663).

12761655817 is a wasteful number, since it uses less digits than its factorization.

12761655817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39543.

The product of its digits is 705600, while the sum is 49.

The spelling of 12761655817 in words is "twelve billion, seven hundred sixty-one million, six hundred fifty-five thousand, eight hundred seventeen".