161211463 has 8 divisors (see below), whose sum is σ = 184757760. Its totient is φ = 137794200.

The previous prime is 161211433. The next prime is 161211473. The reversal of 161211463 is 364112161.

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 161211463 - 2¹³ = 161203271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161211433) 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, 29563 + ... + 34588.

It is an arithmetic number, because the mean of its divisors is an integer number (23094720).

Almost surely, 2^161211463 is an apocalyptic number.

161211463 is a deficient number, since it is larger than the sum of its proper divisors (23546297).

161211463 is an equidigital number, since it uses as much as digits as its factorization.

161211463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64517.

The product of its digits is 864, while the sum is 25.

The square root of 161211463 is about 12696.9076156362. The cubic root of 161211463 is about 544.2502531827.

The spelling of 161211463 in words is "one hundred sixty-one million, two hundred eleven thousand, four hundred sixty-three".