1780722112163 has 4 divisors (see below), whose sum is σ = 1885470471720. Its totient is φ = 1675973752608.

The previous prime is 1780722112123. The next prime is 1780722112181. The reversal of 1780722112163 is 3612112270871.

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 1780722112163 - 2²⁰ = 1780721063587 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1780722112163.

It is not an unprimeable number, because it can be changed into a prime (1780722112123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52374179753 + ... + 52374179786.

It is an arithmetic number, because the mean of its divisors is an integer number (471367617930).

Almost surely, 2^{1780722112163} is an apocalyptic number.

1780722112163 is a deficient number, since it is larger than the sum of its proper divisors (104748359557).

1780722112163 is a wasteful number, since it uses less digits than its factorization.

1780722112163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104748359556.

The product of its (nonzero) digits is 56448, while the sum is 41.

The spelling of 1780722112163 in words is "one trillion, seven hundred eighty billion, seven hundred twenty-two million, one hundred twelve thousand, one hundred sixty-three".