1161085685741 has 2 divisors, whose sum is σ = 1161085685742. Its totient is φ = 1161085685740.

The previous prime is 1161085685699. The next prime is 1161085685827. The reversal of 1161085685741 is 1475865801611.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1160952375625 + 133310116 = 1077475^2 + 11546^2 .

It is a cyclic number.

It is not a de Polignac number, because 1161085685741 - 2²⁶ = 1161018576877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1161085285741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580542842870 + 580542842871.

It is an arithmetic number, because the mean of its divisors is an integer number (580542842871).

Almost surely, 2^{1161085685741} is an apocalyptic number.

It is an amenable number.

1161085685741 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161085685741 is an equidigital number, since it uses as much as digits as its factorization.

1161085685741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1612800, while the sum is 53.

The spelling of 1161085685741 in words is "one trillion, one hundred sixty-one billion, eighty-five million, six hundred eighty-five thousand, seven hundred forty-one".