245404035563641 has 2 divisors, whose sum is σ = 245404035563642. Its totient is φ = 245404035563640.

The previous prime is 245404035563581. The next prime is 245404035563653. The reversal of 245404035563641 is 146365530404542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223205841005625 + 22198194558016 = 14940075^2 + 4711496^2 .

It is a cyclic number.

It is not a de Polignac number, because 245404035563641 - 2¹⁹ = 245404035039353 is a prime.

It is a super-2 number, since 2×245404035563641² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (245404035567641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122702017781820 + 122702017781821.

It is an arithmetic number, because the mean of its divisors is an integer number (122702017781821).

Almost surely, 2^{245404035563641} is an apocalyptic number.

It is an amenable number.

245404035563641 is a deficient number, since it is larger than the sum of its proper divisors (1).

245404035563641 is an equidigital number, since it uses as much as digits as its factorization.

245404035563641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736000, while the sum is 52.

The spelling of 245404035563641 in words is "two hundred forty-five trillion, four hundred four billion, thirty-five million, five hundred sixty-three thousand, six hundred forty-one".