1361051226191 has 2 divisors, whose sum is σ = 1361051226192. Its totient is φ = 1361051226190.

The previous prime is 1361051226179. The next prime is 1361051226289. The reversal of 1361051226191 is 1916221501631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1361051226191 - 2¹⁸ = 1361050964047 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1361051226151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680525613095 + 680525613096.

It is an arithmetic number, because the mean of its divisors is an integer number (680525613096).

Almost surely, 2^{1361051226191} is an apocalyptic number.

1361051226191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361051226191 is an equidigital number, since it uses as much as digits as its factorization.

1361051226191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 38.

The spelling of 1361051226191 in words is "one trillion, three hundred sixty-one billion, fifty-one million, two hundred twenty-six thousand, one hundred ninety-one".