128161013 has 2 divisors, whose sum is σ = 128161014. Its totient is φ = 128161012.

The previous prime is 128160931. The next prime is 128161067. The reversal of 128161013 is 310161821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68840209 + 59320804 = 8297^2 + 7702^2 .

It is a cyclic number.

It is not a de Polignac number, because 128161013 - 2²⁰ = 127112437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128161013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128161073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64080506 + 64080507.

It is an arithmetic number, because the mean of its divisors is an integer number (64080507).

Almost surely, 2^128161013 is an apocalyptic number.

It is an amenable number.

128161013 is a deficient number, since it is larger than the sum of its proper divisors (1).

128161013 is an equidigital number, since it uses as much as digits as its factorization.

128161013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 128161013 is about 11320.8220991234. The cubic root of 128161013 is about 504.1796477347.

The spelling of 128161013 in words is "one hundred twenty-eight million, one hundred sixty-one thousand, thirteen".