32161394169 has 20 divisors (see below), whose sum is σ = 48050513280.
Its totient is φ = 21437828280.
The previous prime is 32161394143. The next prime is 32161394179. The reversal of 32161394169 is 96149316123.
32161394169 is a `hidden beast` number, since 3 + 21 + 613 + 9 + 4 + 1 + 6 + 9 = 666.
It is not a de Polignac number, because 32161394169 - 233 = 23571459577 is a prime.
It is a super-2 number, since 2×321613941692 (a number of 22 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (32161394129) by changing a digit.
It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 626464 + ... + 675854.
It is an arithmetic number, because the mean of its divisors is an integer number (2402525664).
Almost surely, 232161394169 is an apocalyptic number.
It is an amenable number.
32161394169 is a deficient number, since it is larger than the sum of its proper divisors (15889119111).
32161394169 is an equidigital number, since it uses as much as digits as its factorization.
32161394169 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 57442 (or 57433 counting only the distinct ones).
The product of its digits is 209952, while the sum is 45.
The spelling of 32161394169 in words is "thirty-two billion, one hundred sixty-one million, three hundred ninety-four thousand, one hundred sixty-nine".