418304773681 has 2 divisors, whose sum is σ = 418304773682. Its totient is φ = 418304773680.

The previous prime is 418304773657. The next prime is 418304773717. The reversal of 418304773681 is 186377403814.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 347610472225 + 70694301456 = 589585^2 + 265884^2 .

It is a cyclic number.

It is not a de Polignac number, because 418304773681 - 2¹⁵ = 418304740913 is a prime.

It is a super-2 number, since 2×418304773681² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (418304771681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209152386840 + 209152386841.

It is an arithmetic number, because the mean of its divisors is an integer number (209152386841).

Almost surely, 2^418304773681 is an apocalyptic number.

It is an amenable number.

418304773681 is a deficient number, since it is larger than the sum of its proper divisors (1).

418304773681 is an equidigital number, since it uses as much as digits as its factorization.

418304773681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 418304773681 in words is "four hundred eighteen billion, three hundred four million, seven hundred seventy-three thousand, six hundred eighty-one".