131001367545569 has 2 divisors, whose sum is σ = 131001367545570. Its totient is φ = 131001367545568.

The previous prime is 131001367545541. The next prime is 131001367545571. The reversal of 131001367545569 is 965545763100131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70695472963600 + 60305894581969 = 8408060^2 + 7765687^2 .

It is an emirp because it is prime and its reverse (965545763100131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131001367545569 is a prime.

It is a super-2 number, since 2×131001367545569² (a number of 29 digits) contains 22 as substring.

Together with 131001367545571, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131001367545539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65500683772784 + 65500683772785.

It is an arithmetic number, because the mean of its divisors is an integer number (65500683772785).

Almost surely, 2^{131001367545569} is an apocalyptic number.

It is an amenable number.

131001367545569 is a deficient number, since it is larger than the sum of its proper divisors (1).

131001367545569 is an equidigital number, since it uses as much as digits as its factorization.

131001367545569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206000, while the sum is 56.

The spelling of 131001367545569 in words is "one hundred thirty-one trillion, one billion, three hundred sixty-seven million, five hundred forty-five thousand, five hundred sixty-nine".