161314424077 has 2 divisors, whose sum is σ = 161314424078. Its totient is φ = 161314424076.

The previous prime is 161314424059. The next prime is 161314424111. The reversal of 161314424077 is 770424413161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94429602436 + 66884821641 = 307294^2 + 258621^2 .

It is a cyclic number.

It is not a de Polignac number, because 161314424077 - 2²⁷ = 161180206349 is a prime.

It is a super-3 number, since 3×161314424077³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161314424477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80657212038 + 80657212039.

It is an arithmetic number, because the mean of its divisors is an integer number (80657212039).

Almost surely, 2^161314424077 is an apocalyptic number.

It is an amenable number.

161314424077 is a deficient number, since it is larger than the sum of its proper divisors (1).

161314424077 is an equidigital number, since it uses as much as digits as its factorization.

161314424077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 161314424077 in words is "one hundred sixty-one billion, three hundred fourteen million, four hundred twenty-four thousand, seventy-seven".