161424865982161 has 8 divisors (see below), whose sum is σ = 168463803118464. Its totient is φ = 154387634237760.

The previous prime is 161424865982153. The next prime is 161424865982173. The reversal of 161424865982161 is 161289568424161.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161424865982161 - 2³ = 161424865982153 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161424865982093 and 161424865982102.

It is not an unprimeable number, because it can be changed into a prime (161424866982161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426154536 + ... + 426533161.

It is an arithmetic number, because the mean of its divisors is an integer number (21057975389808).

Almost surely, 2^{161424865982161} is an apocalyptic number.

It is an amenable number.

161424865982161 is a deficient number, since it is larger than the sum of its proper divisors (7038937136303).

161424865982161 is an equidigital number, since it uses as much as digits as its factorization.

161424865982161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852695951.

The product of its digits is 39813120, while the sum is 64.

The spelling of 161424865982161 in words is "one hundred sixty-one trillion, four hundred twenty-four billion, eight hundred sixty-five million, nine hundred eighty-two thousand, one hundred sixty-one".