43444831361 has 2 divisors, whose sum is σ = 43444831362. Its totient is φ = 43444831360.

The previous prime is 43444831303. The next prime is 43444831379. The reversal of 43444831361 is 16313844434.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39822597136 + 3622234225 = 199556^2 + 60185^2 .

It is a cyclic number.

It is not a de Polignac number, because 43444831361 - 2²² = 43440637057 is a prime.

It is a super-2 number, since 2×43444831361² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43444831061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21722415680 + 21722415681.

It is an arithmetic number, because the mean of its divisors is an integer number (21722415681).

Almost surely, 2^43444831361 is an apocalyptic number.

It is an amenable number.

43444831361 is a deficient number, since it is larger than the sum of its proper divisors (1).

43444831361 is an equidigital number, since it uses as much as digits as its factorization.

43444831361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 41.

The spelling of 43444831361 in words is "forty-three billion, four hundred forty-four million, eight hundred thirty-one thousand, three hundred sixty-one".