43108161121 has 2 divisors, whose sum is σ = 43108161122. Its totient is φ = 43108161120.

The previous prime is 43108161113. The next prime is 43108161139. The reversal of 43108161121 is 12116180134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39318527521 + 3789633600 = 198289^2 + 61560^2 .

It is a cyclic number.

It is not a de Polignac number, because 43108161121 - 2³ = 43108161113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43108161121.

It is not a weakly prime, because it can be changed into another prime (43108161721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21554080560 + 21554080561.

It is an arithmetic number, because the mean of its divisors is an integer number (21554080561).

Almost surely, 2^43108161121 is an apocalyptic number.

It is an amenable number.

43108161121 is a deficient number, since it is larger than the sum of its proper divisors (1).

43108161121 is an equidigital number, since it uses as much as digits as its factorization.

43108161121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 43108161121 in words is "forty-three billion, one hundred eight million, one hundred sixty-one thousand, one hundred twenty-one".