11365136897 has 2 divisors, whose sum is σ = 11365136898. Its totient is φ = 11365136896.

The previous prime is 11365136879. The next prime is 11365136927. The reversal of 11365136897 is 79863156311.

Together with previous prime (11365136879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10996458496 + 368678401 = 104864^2 + 19201^2 .

It is an emirp because it is prime and its reverse (79863156311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11365136897 - 2²⁰ = 11364088321 is a prime.

It is not a weakly prime, because it can be changed into another prime (11365136597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5682568448 + 5682568449.

It is an arithmetic number, because the mean of its divisors is an integer number (5682568449).

Almost surely, 2^11365136897 is an apocalyptic number.

It is an amenable number.

11365136897 is a deficient number, since it is larger than the sum of its proper divisors (1).

11365136897 is an equidigital number, since it uses as much as digits as its factorization.

11365136897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 50.

The spelling of 11365136897 in words is "eleven billion, three hundred sixty-five million, one hundred thirty-six thousand, eight hundred ninety-seven".