161152616250061 has 2 divisors, whose sum is σ = 161152616250062. Its totient is φ = 161152616250060.

The previous prime is 161152616250053. The next prime is 161152616250139. The reversal of 161152616250061 is 160052616251161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139536337502500 + 21616278747561 = 11812550^2 + 4649331^2 .

It is a cyclic number.

It is not a de Polignac number, because 161152616250061 - 2³ = 161152616250053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161152616250761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80576308125030 + 80576308125031.

It is an arithmetic number, because the mean of its divisors is an integer number (80576308125031).

Almost surely, 2^{161152616250061} is an apocalyptic number.

It is an amenable number.

161152616250061 is a deficient number, since it is larger than the sum of its proper divisors (1).

161152616250061 is an equidigital number, since it uses as much as digits as its factorization.

161152616250061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 43.

The spelling of 161152616250061 in words is "one hundred sixty-one trillion, one hundred fifty-two billion, six hundred sixteen million, two hundred fifty thousand, sixty-one".