441350787781 has 2 divisors, whose sum is σ = 441350787782. Its totient is φ = 441350787780.

The previous prime is 441350787763. The next prime is 441350787851. The reversal of 441350787781 is 187787053144.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 435380907556 + 5969880225 = 659834^2 + 77265^2 .

It is a cyclic number.

It is not a de Polignac number, because 441350787781 - 2²⁵ = 441317233349 is a prime.

It is a super-2 number, since 2×441350787781² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (441350787721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220675393890 + 220675393891.

It is an arithmetic number, because the mean of its divisors is an integer number (220675393891).

Almost surely, 2^441350787781 is an apocalyptic number.

It is an amenable number.

441350787781 is a deficient number, since it is larger than the sum of its proper divisors (1).

441350787781 is an equidigital number, since it uses as much as digits as its factorization.

441350787781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5268480, while the sum is 55.

The spelling of 441350787781 in words is "four hundred forty-one billion, three hundred fifty million, seven hundred eighty-seven thousand, seven hundred eighty-one".