445452004210261 has 2 divisors, whose sum is σ = 445452004210262. Its totient is φ = 445452004210260.

The previous prime is 445452004210223. The next prime is 445452004210333. The reversal of 445452004210261 is 162012400254544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 438527575102500 + 6924429107761 = 20941050^2 + 2631431^2 .

It is a cyclic number.

It is not a de Polignac number, because 445452004210261 - 2¹¹ = 445452004208213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445452004213261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222726002105130 + 222726002105131.

It is an arithmetic number, because the mean of its divisors is an integer number (222726002105131).

Almost surely, 2^{445452004210261} is an apocalyptic number.

It is an amenable number.

445452004210261 is a deficient number, since it is larger than the sum of its proper divisors (1).

445452004210261 is an equidigital number, since it uses as much as digits as its factorization.

445452004210261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 307200, while the sum is 40.

The spelling of 445452004210261 in words is "four hundred forty-five trillion, four hundred fifty-two billion, four million, two hundred ten thousand, two hundred sixty-one".