1317261715771 has 8 divisors (see below), whose sum is σ = 1351266840000. Its totient is φ = 1283345962560.

The previous prime is 1317261715747. The next prime is 1317261715787. The reversal of 1317261715771 is 1775171627131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1317261715771 - 2¹¹ = 1317261713723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1317261715171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22312896 + ... + 22371853.

It is an arithmetic number, because the mean of its divisors is an integer number (168908355000).

Almost surely, 2^{1317261715771} is an apocalyptic number.

1317261715771 is a deficient number, since it is larger than the sum of its proper divisors (34005124229).

1317261715771 is an equidigital number, since it uses as much as digits as its factorization.

1317261715771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44685509.

The product of its digits is 432180, while the sum is 49.

The spelling of 1317261715771 in words is "one trillion, three hundred seventeen billion, two hundred sixty-one million, seven hundred fifteen thousand, seven hundred seventy-one".