5615516161 has 2 divisors, whose sum is σ = 5615516162. Its totient is φ = 5615516160.

The previous prime is 5615516147. The next prime is 5615516189. The reversal of 5615516161 is 1616155165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3583219600 + 2032296561 = 59860^2 + 45081^2 .

It is a cyclic number.

It is not a de Polignac number, because 5615516161 - 2⁹ = 5615515649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5615516161.

It is not a weakly prime, because it can be changed into another prime (5615516141) 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, 2807758080 + 2807758081.

It is an arithmetic number, because the mean of its divisors is an integer number (2807758081).

Almost surely, 2^5615516161 is an apocalyptic number.

It is an amenable number.

5615516161 is a deficient number, since it is larger than the sum of its proper divisors (1).

5615516161 is an equidigital number, since it uses as much as digits as its factorization.

5615516161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27000, while the sum is 37.

The square root of 5615516161 is about 74936.7477343393. The cubic root of 5615516161 is about 1777.4465935978.

The spelling of 5615516161 in words is "five billion, six hundred fifteen million, five hundred sixteen thousand, one hundred sixty-one".