361131426531569 has 2 divisors, whose sum is σ = 361131426531570. Its totient is φ = 361131426531568.

The previous prime is 361131426531541. The next prime is 361131426531599. The reversal of 361131426531569 is 965135624131163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 243961907718400 + 117169518813169 = 15619280^2 + 10824487^2 .

It is a cyclic number.

It is not a de Polignac number, because 361131426531569 - 2³² = 361127131564273 is a prime.

It is a super-2 number, since 2×361131426531569² (a number of 30 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (361131426531509) 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 as a sum of consecutive naturals, namely, 180565713265784 + 180565713265785.

It is an arithmetic number, because the mean of its divisors is an integer number (180565713265785).

Almost surely, 2^{361131426531569} is an apocalyptic number.

It is an amenable number.

361131426531569 is a deficient number, since it is larger than the sum of its proper divisors (1).

361131426531569 is an equidigital number, since it uses as much as digits as its factorization.

361131426531569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10497600, while the sum is 56.

The spelling of 361131426531569 in words is "three hundred sixty-one trillion, one hundred thirty-one billion, four hundred twenty-six million, five hundred thirty-one thousand, five hundred sixty-nine".