1245802245841 has 2 divisors, whose sum is σ = 1245802245842. Its totient is φ = 1245802245840.

The previous prime is 1245802245761. The next prime is 1245802245847. The reversal of 1245802245841 is 1485422085421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1066262760000 + 179539485841 = 1032600^2 + 423721^2 .

It is a cyclic number.

It is not a de Polignac number, because 1245802245841 - 2⁹ = 1245802245329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1245802245791 and 1245802245800.

It is not a weakly prime, because it can be changed into another prime (1245802245847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622901122920 + 622901122921.

It is an arithmetic number, because the mean of its divisors is an integer number (622901122921).

Almost surely, 2^{1245802245841} is an apocalyptic number.

It is an amenable number.

1245802245841 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245802245841 is an equidigital number, since it uses as much as digits as its factorization.

1245802245841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 819200, while the sum is 46.

The spelling of 1245802245841 in words is "one trillion, two hundred forty-five billion, eight hundred two million, two hundred forty-five thousand, eight hundred forty-one".