1318518766271 has 4 divisors (see below), whose sum is σ = 1506878590032. Its totient is φ = 1130158942512.

The previous prime is 1318518766267. The next prime is 1318518766297. The reversal of 1318518766271 is 1726678158131.

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 1318518766271 - 2² = 1318518766267 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 (1318518766261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94179911870 + ... + 94179911883.

It is an arithmetic number, because the mean of its divisors is an integer number (376719647508).

Almost surely, 2^{1318518766271} is an apocalyptic number.

1318518766271 is a deficient number, since it is larger than the sum of its proper divisors (188359823761).

1318518766271 is an equidigital number, since it uses as much as digits as its factorization.

1318518766271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188359823760.

The product of its digits is 3386880, while the sum is 56.

The spelling of 1318518766271 in words is "one trillion, three hundred eighteen billion, five hundred eighteen million, seven hundred sixty-six thousand, two hundred seventy-one".