1245533226461 has 2 divisors, whose sum is σ = 1245533226462. Its totient is φ = 1245533226460.

The previous prime is 1245533226449. The next prime is 1245533226499. The reversal of 1245533226461 is 1646223355421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1160508498361 + 85024728100 = 1077269^2 + 291590^2 .

It is an emirp because it is prime and its reverse (1646223355421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1245533226461 - 2³⁴ = 1228353357277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1245533226361) 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, 622766613230 + 622766613231.

It is an arithmetic number, because the mean of its divisors is an integer number (622766613231).

Almost surely, 2^{1245533226461} is an apocalyptic number.

It is an amenable number.

1245533226461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245533226461 is an equidigital number, since it uses as much as digits as its factorization.

1245533226461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1036800, while the sum is 44.

The spelling of 1245533226461 in words is "one trillion, two hundred forty-five billion, five hundred thirty-three million, two hundred twenty-six thousand, four hundred sixty-one".