1040075558161 has 2 divisors, whose sum is σ = 1040075558162. Its totient is φ = 1040075558160.

The previous prime is 1040075558113. The next prime is 1040075558239. The reversal of 1040075558161 is 1618555700401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 852010225936 + 188065332225 = 923044^2 + 433665^2 .

It is a cyclic number.

It is not a de Polignac number, because 1040075558161 - 2⁷ = 1040075558033 is a prime.

It is not a weakly prime, because it can be changed into another prime (1040075556161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520037779080 + 520037779081.

It is an arithmetic number, because the mean of its divisors is an integer number (520037779081).

Almost surely, 2^{1040075558161} is an apocalyptic number.

It is an amenable number.

1040075558161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040075558161 is an equidigital number, since it uses as much as digits as its factorization.

1040075558161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168000, while the sum is 43.

The spelling of 1040075558161 in words is "one trillion, forty billion, seventy-five million, five hundred fifty-eight thousand, one hundred sixty-one".