444482728721 has 2 divisors, whose sum is σ = 444482728722. Its totient is φ = 444482728720.

The previous prime is 444482728643. The next prime is 444482728741. The reversal of 444482728721 is 127827284444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 339610383121 + 104872345600 = 582761^2 + 323840^2 .

It is a cyclic number.

It is not a de Polignac number, because 444482728721 - 2²² = 444478534417 is a prime.

It is a super-2 number, since 2×444482728721² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (444482728741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222241364360 + 222241364361.

It is an arithmetic number, because the mean of its divisors is an integer number (222241364361).

Almost surely, 2^444482728721 is an apocalyptic number.

It is an amenable number.

444482728721 is a deficient number, since it is larger than the sum of its proper divisors (1).

444482728721 is an equidigital number, since it uses as much as digits as its factorization.

444482728721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6422528, while the sum is 53.

The spelling of 444482728721 in words is "four hundred forty-four billion, four hundred eighty-two million, seven hundred twenty-eight thousand, seven hundred twenty-one".