1317791186268 has 48 divisors (see below), whose sum is σ = 3296931079680. Its totient is φ = 408191457024.

The previous prime is 1317791186267. The next prime is 1317791186351. The reversal of 1317791186268 is 8626811977131.

It is a super-2 number, since 2×1317791186268² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317791186263) 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 15 ways as a sum of consecutive naturals, for example, 40868446 + ... + 40900677.

It is an arithmetic number, because the mean of its divisors is an integer number (68686064160).

Almost surely, 2^{1317791186268} is an apocalyptic number.

It is an amenable number.

1317791186268 is an abundant number, since it is smaller than the sum of its proper divisors (1979139893412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1317791186268 is a wasteful number, since it uses less digits than its factorization.

1317791186268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81769226 (or 81769224 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 60.

The spelling of 1317791186268 in words is "one trillion, three hundred seventeen billion, seven hundred ninety-one million, one hundred eighty-six thousand, two hundred sixty-eight".