12790765867 has 4 divisors (see below), whose sum is σ = 13953562776. Its totient is φ = 11627968960.

The previous prime is 12790765843. The next prime is 12790765873. The reversal of 12790765867 is 76856709721.

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 12790765867 - 2⁷ = 12790765739 is a prime.

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 Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12790765817) 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, 581398438 + ... + 581398459.

It is an arithmetic number, because the mean of its divisors is an integer number (3488390694).

Almost surely, 2^12790765867 is an apocalyptic number.

12790765867 is a deficient number, since it is larger than the sum of its proper divisors (1162796909).

12790765867 is a wasteful number, since it uses less digits than its factorization.

12790765867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162796908.

The product of its (nonzero) digits is 8890560, while the sum is 58.

The spelling of 12790765867 in words is "twelve billion, seven hundred ninety million, seven hundred sixty-five thousand, eight hundred sixty-seven".