440311336681 has 2 divisors, whose sum is σ = 440311336682. Its totient is φ = 440311336680.

The previous prime is 440311336669. The next prime is 440311336687. The reversal of 440311336681 is 186633113044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 378943661056 + 61367675625 = 615584^2 + 247725^2 .

It is a cyclic number.

It is not a de Polignac number, because 440311336681 - 2¹³ = 440311328489 is a prime.

It is a super-2 number, since 2×440311336681² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (440311336687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220155668340 + 220155668341.

It is an arithmetic number, because the mean of its divisors is an integer number (220155668341).

Almost surely, 2^440311336681 is an apocalyptic number.

It is an amenable number.

440311336681 is a deficient number, since it is larger than the sum of its proper divisors (1).

440311336681 is an equidigital number, since it uses as much as digits as its factorization.

440311336681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 440311336681 in words is "four hundred forty billion, three hundred eleven million, three hundred thirty-six thousand, six hundred eighty-one".