181583212465141 has 2 divisors, whose sum is σ = 181583212465142. Its totient is φ = 181583212465140.

The previous prime is 181583212465111. The next prime is 181583212465177. The reversal of 181583212465141 is 141564212385181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142139210506225 + 39444001958916 = 11922215^2 + 6280446^2 .

It is a cyclic number.

It is not a de Polignac number, because 181583212465141 - 2³¹ = 181581064981493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (181583212465111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90791606232570 + 90791606232571.

It is an arithmetic number, because the mean of its divisors is an integer number (90791606232571).

Almost surely, 2^{181583212465141} is an apocalyptic number.

It is an amenable number.

181583212465141 is a deficient number, since it is larger than the sum of its proper divisors (1).

181583212465141 is an equidigital number, since it uses as much as digits as its factorization.

181583212465141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1843200, while the sum is 52.

The spelling of 181583212465141 in words is "one hundred eighty-one trillion, five hundred eighty-three billion, two hundred twelve million, four hundred sixty-five thousand, one hundred forty-one".