161052616251161 has 2 divisors, whose sum is σ = 161052616251162. Its totient is φ = 161052616251160.

The previous prime is 161052616251143. The next prime is 161052616251167. The reversal of 161052616251161 is 161152616250161.

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., 160982019761161 + 70596490000 = 12687869^2 + 265700^2 .

It is a cyclic number.

It is not a de Polignac number, because 161052616251161 - 2⁶ = 161052616251097 is a prime.

It is not a weakly prime, because it can be changed into another prime (161052616251167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80526308125580 + 80526308125581.

It is an arithmetic number, because the mean of its divisors is an integer number (80526308125581).

Almost surely, 2^{161052616251161} is an apocalyptic number.

It is an amenable number.

161052616251161 is a deficient number, since it is larger than the sum of its proper divisors (1).

161052616251161 is an equidigital number, since it uses as much as digits as its factorization.

161052616251161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 44.

The spelling of 161052616251161 in words is "one hundred sixty-one trillion, fifty-two billion, six hundred sixteen million, two hundred fifty-one thousand, one hundred sixty-one".