43347252881 has 2 divisors, whose sum is σ = 43347252882. Its totient is φ = 43347252880.

The previous prime is 43347252827. The next prime is 43347252889. The reversal of 43347252881 is 18825274334.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38177642881 + 5169610000 = 195391^2 + 71900^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43347252881 is a prime.

It is a super-2 number, since 2×43347252881² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43347252889) 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, 21673626440 + 21673626441.

It is an arithmetic number, because the mean of its divisors is an integer number (21673626441).

Almost surely, 2^43347252881 is an apocalyptic number.

It is an amenable number.

43347252881 is a deficient number, since it is larger than the sum of its proper divisors (1).

43347252881 is an equidigital number, since it uses as much as digits as its factorization.

43347252881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1290240, while the sum is 47.

The spelling of 43347252881 in words is "forty-three billion, three hundred forty-seven million, two hundred fifty-two thousand, eight hundred eighty-one".