1516061541161 has 2 divisors, whose sum is σ = 1516061541162. Its totient is φ = 1516061541160.

The previous prime is 1516061541131. The next prime is 1516061541187. The reversal of 1516061541161 is 1611451606151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1163723137600 + 352338403561 = 1078760^2 + 593581^2 .

It is a cyclic number.

It is not a de Polignac number, because 1516061541161 - 2³⁴ = 1498881671977 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1516061541131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 758030770580 + 758030770581.

It is an arithmetic number, because the mean of its divisors is an integer number (758030770581).

Almost surely, 2^{1516061541161} is an apocalyptic number.

It is an amenable number.

1516061541161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1516061541161 is an equidigital number, since it uses as much as digits as its factorization.

1516061541161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 38.

The spelling of 1516061541161 in words is "one trillion, five hundred sixteen billion, sixty-one million, five hundred forty-one thousand, one hundred sixty-one".