161424168269 has 12 divisors (see below), whose sum is σ = 202223684124. Its totient is φ = 127720220544.

The previous prime is 161424168263. The next prime is 161424168313. The reversal of 161424168269 is 962861424161.

It can be written as a sum of positive squares in 2 ways, for example, as 85103475625 + 76320692644 = 291725^2 + 276262^2 .

It is a de Polignac number, because none of the positive numbers 2^k-161424168269 is a prime.

It is a super-2 number, since 2×161424168269² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161424168263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126705932 + ... + 126707205.

It is an arithmetic number, because the mean of its divisors is an integer number (16851973677).

Almost surely, 2^161424168269 is an apocalyptic number.

It is an amenable number.

161424168269 is a deficient number, since it is larger than the sum of its proper divisors (40799515855).

161424168269 is a wasteful number, since it uses less digits than its factorization.

161424168269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253413164 (or 253413157 counting only the distinct ones).

The product of its digits is 995328, while the sum is 50.

The spelling of 161424168269 in words is "one hundred sixty-one billion, four hundred twenty-four million, one hundred sixty-eight thousand, two hundred sixty-nine".