1361227538291 has 2 divisors, whose sum is σ = 1361227538292. Its totient is φ = 1361227538290.

The previous prime is 1361227538287. The next prime is 1361227538309. The reversal of 1361227538291 is 1928357221631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1361227538291 - 2² = 1361227538287 is a prime.

It is a super-2 number, since 2×1361227538291² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1361227538191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680613769145 + 680613769146.

It is an arithmetic number, because the mean of its divisors is an integer number (680613769146).

Almost surely, 2^{1361227538291} is an apocalyptic number.

1361227538291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361227538291 is an equidigital number, since it uses as much as digits as its factorization.

1361227538291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 50.

The spelling of 1361227538291 in words is "one trillion, three hundred sixty-one billion, two hundred twenty-seven million, five hundred thirty-eight thousand, two hundred ninety-one".