1316245316261 has 8 divisors (see below), whose sum is σ = 1377317240064. Its totient is φ = 1256336667360.

The previous prime is 1316245316161. The next prime is 1316245316293. The reversal of 1316245316261 is 1626135426131.

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 1316245316261 - 2³⁴ = 1299065447077 is a prime.

It is a super-2 number, since 2×1316245316261² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316245316161) 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, 290816411 + ... + 290820936.

It is an arithmetic number, because the mean of its divisors is an integer number (172164655008).

Almost surely, 2^{1316245316261} is an apocalyptic number.

It is an amenable number.

1316245316261 is a deficient number, since it is larger than the sum of its proper divisors (61071923803).

1316245316261 is an equidigital number, since it uses as much as digits as its factorization.

1316245316261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581637451.

The product of its digits is 155520, while the sum is 41.

The spelling of 1316245316261 in words is "one trillion, three hundred sixteen billion, two hundred forty-five million, three hundred sixteen thousand, two hundred sixty-one".