161292663 has 24 divisors (see below), whose sum is σ = 271700000. Its totient is φ = 92165472.

The previous prime is 161292643. The next prime is 161292671. The reversal of 161292663 is 366292161.

It is a happy number.

It is not a de Polignac number, because 161292663 - 2⁵ = 161292631 is a prime.

It is a super-3 number, since 3×161292663³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161292623) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23038 + ... + 29211.

Almost surely, 2^161292663 is an apocalyptic number.

161292663 is a deficient number, since it is larger than the sum of its proper divisors (110407337).

161292663 is an equidigital number, since it uses as much as digits as its factorization.

161292663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52276 (or 52259 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 161292663 is about 12700.1048420869. The cubic root of 161292663 is about 544.3416149713.

The spelling of 161292663 in words is "one hundred sixty-one million, two hundred ninety-two thousand, six hundred sixty-three".