1145262275681 has 2 divisors, whose sum is σ = 1145262275682. Its totient is φ = 1145262275680.

The previous prime is 1145262275671. The next prime is 1145262275683. The reversal of 1145262275681 is 1865722625411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 973016525056 + 172245750625 = 986416^2 + 415025^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145262275681 - 2⁶ = 1145262275617 is a prime.

It is a super-2 number, since 2×1145262275681² (a number of 25 digits) contains 22 as substring.

Together with 1145262275683, 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 (1145262275683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572631137840 + 572631137841.

It is an arithmetic number, because the mean of its divisors is an integer number (572631137841).

Almost surely, 2^{1145262275681} is an apocalyptic number.

It is an amenable number.

1145262275681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145262275681 is an equidigital number, since it uses as much as digits as its factorization.

1145262275681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1612800, while the sum is 50.

The spelling of 1145262275681 in words is "one trillion, one hundred forty-five billion, two hundred sixty-two million, two hundred seventy-five thousand, six hundred eighty-one".