43826399262881 has 2 divisors, whose sum is σ = 43826399262882. Its totient is φ = 43826399262880.

The previous prime is 43826399262787. The next prime is 43826399262929. The reversal of 43826399262881 is 18826299362834.

43826399262881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33390010571281 + 10436388691600 = 5778409^2 + 3230540^2 .

It is a cyclic number.

It is not a de Polignac number, because 43826399262881 - 2³⁰ = 43825325521057 is a prime.

It is a super-2 number, since 2×43826399262881² (a number of 28 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (43826399262281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21913199631440 + 21913199631441.

It is an arithmetic number, because the mean of its divisors is an integer number (21913199631441).

Almost surely, 2^{43826399262881} is an apocalyptic number.

It is an amenable number.

43826399262881 is a deficient number, since it is larger than the sum of its proper divisors (1).

43826399262881 is an equidigital number, since it uses as much as digits as its factorization.

43826399262881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 429981696, while the sum is 71.

The spelling of 43826399262881 in words is "forty-three trillion, eight hundred twenty-six billion, three hundred ninety-nine million, two hundred sixty-two thousand, eight hundred eighty-one".