1040075556161 has 2 divisors, whose sum is σ = 1040075556162. Its totient is φ = 1040075556160.

The previous prime is 1040075556089. The next prime is 1040075556199. The reversal of 1040075556161 is 1616555700401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 736412841025 + 303662715136 = 858145^2 + 551056^2 .

It is a cyclic number.

It is not a de Polignac number, because 1040075556161 - 2²⁶ = 1040008447297 is a prime.

It is a super-2 number, since 2×1040075556161² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1040075558161) 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, 520037778080 + 520037778081.

It is an arithmetic number, because the mean of its divisors is an integer number (520037778081).

Almost surely, 2^{1040075556161} is an apocalyptic number.

It is an amenable number.

1040075556161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040075556161 is an equidigital number, since it uses as much as digits as its factorization.

1040075556161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126000, while the sum is 41.

The spelling of 1040075556161 in words is "one trillion, forty billion, seventy-five million, five hundred fifty-six thousand, one hundred sixty-one".