445452004213261 has 2 divisors, whose sum is σ = 445452004213262. Its totient is φ = 445452004213260.

The previous prime is 445452004213243. The next prime is 445452004213309. The reversal of 445452004213261 is 162312400254544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 256308893122500 + 189143111090761 = 16009650^2 + 13752931^2 .

It is a cyclic number.

It is not a de Polignac number, because 445452004213261 - 2¹³ = 445452004205069 is a prime.

It is a super-2 number, since 2×445452004213261² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445452004213061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222726002106630 + 222726002106631.

It is an arithmetic number, because the mean of its divisors is an integer number (222726002106631).

Almost surely, 2^{445452004213261} is an apocalyptic number.

It is an amenable number.

445452004213261 is a deficient number, since it is larger than the sum of its proper divisors (1).

445452004213261 is an equidigital number, since it uses as much as digits as its factorization.

445452004213261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 921600, while the sum is 43.

The spelling of 445452004213261 in words is "four hundred forty-five trillion, four hundred fifty-two billion, four million, two hundred thirteen thousand, two hundred sixty-one".