75543683161 has 2 divisors, whose sum is σ = 75543683162. Its totient is φ = 75543683160.

The previous prime is 75543683143. The next prime is 75543683209. The reversal of 75543683161 is 16138634557.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49988463561 + 25555219600 = 223581^2 + 159860^2 .

It is a cyclic number.

It is not a de Polignac number, because 75543683161 - 2⁹ = 75543682649 is a prime.

It is not a weakly prime, because it can be changed into another prime (75543683461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37771841580 + 37771841581.

It is an arithmetic number, because the mean of its divisors is an integer number (37771841581).

Almost surely, 2^75543683161 is an apocalyptic number.

It is an amenable number.

75543683161 is a deficient number, since it is larger than the sum of its proper divisors (1).

75543683161 is an equidigital number, since it uses as much as digits as its factorization.

75543683161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1814400, while the sum is 49.

The spelling of 75543683161 in words is "seventy-five billion, five hundred forty-three million, six hundred eighty-three thousand, one hundred sixty-one".