43090112081 has 2 divisors, whose sum is σ = 43090112082. Its totient is φ = 43090112080.

The previous prime is 43090112053. The next prime is 43090112089. The reversal of 43090112081 is 18021109034.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40680873025 + 2409239056 = 201695^2 + 49084^2 .

It is a cyclic number.

It is not a de Polignac number, because 43090112081 - 2⁶ = 43090112017 is a prime.

It is a super-2 number, since 2×43090112081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43090112089) 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, 21545056040 + 21545056041.

It is an arithmetic number, because the mean of its divisors is an integer number (21545056041).

Almost surely, 2^43090112081 is an apocalyptic number.

It is an amenable number.

43090112081 is a deficient number, since it is larger than the sum of its proper divisors (1).

43090112081 is an equidigital number, since it uses as much as digits as its factorization.

43090112081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 43090112081 in words is "forty-three billion, ninety million, one hundred twelve thousand, eighty-one".