100161615161 has 2 divisors, whose sum is σ = 100161615162. Its totient is φ = 100161615160.

The previous prime is 100161615139. The next prime is 100161615173. The reversal of 100161615161 is 161516161001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97094560000 + 3067055161 = 311600^2 + 55381^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100161615161 is a prime.

It is not a weakly prime, because it can be changed into another prime (100161615131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50080807580 + 50080807581.

It is an arithmetic number, because the mean of its divisors is an integer number (50080807581).

Almost surely, 2^100161615161 is an apocalyptic number.

It is an amenable number.

100161615161 is a deficient number, since it is larger than the sum of its proper divisors (1).

100161615161 is an equidigital number, since it uses as much as digits as its factorization.

100161615161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 29.

Adding to 100161615161 its reverse (161516161001), we get a palindrome (261677776162).

The spelling of 100161615161 in words is "one hundred billion, one hundred sixty-one million, six hundred fifteen thousand, one hundred sixty-one".