161268077 has 2 divisors, whose sum is σ = 161268078. Its totient is φ = 161268076.

The previous prime is 161268071. The next prime is 161268083. The reversal of 161268077 is 770862161.

161268077 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (161268071) and next prime (161268083).

It can be written as a sum of positive squares in only one way, i.e., 128618281 + 32649796 = 11341^2 + 5714^2 .

It is a cyclic number.

It is not a de Polignac number, because 161268077 - 2⁴ = 161268061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161268077.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161268071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80634038 + 80634039.

It is an arithmetic number, because the mean of its divisors is an integer number (80634039).

Almost surely, 2^161268077 is an apocalyptic number.

It is an amenable number.

161268077 is a deficient number, since it is larger than the sum of its proper divisors (1).

161268077 is an equidigital number, since it uses as much as digits as its factorization.

161268077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 161268077 is about 12699.1368604327. The cubic root of 161268077 is about 544.3139553891.

The spelling of 161268077 in words is "one hundred sixty-one million, two hundred sixty-eight thousand, seventy-seven".