12791780411 has 4 divisors (see below), whose sum is σ = 12792007032. Its totient is φ = 12791553792.

The previous prime is 12791780389. The next prime is 12791780431. The reversal of 12791780411 is 11408719721.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12791780411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12791780431) 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, 46331 + ... + 166523.

It is an arithmetic number, because the mean of its divisors is an integer number (3198001758).

Almost surely, 2^12791780411 is an apocalyptic number.

12791780411 is a deficient number, since it is larger than the sum of its proper divisors (226621).

12791780411 is a wasteful number, since it uses less digits than its factorization.

12791780411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226620.

The product of its (nonzero) digits is 28224, while the sum is 41.

The spelling of 12791780411 in words is "twelve billion, seven hundred ninety-one million, seven hundred eighty thousand, four hundred eleven".