16423232461 has 4 divisors (see below), whose sum is σ = 16429032412. Its totient is φ = 16417432512.

The previous prime is 16423232453. The next prime is 16423232489.

16423232461 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12858426025 + 3564806436 = 113395^2 + 59706^2 .

It is a cyclic number.

It is not a de Polignac number, because 16423232461 - 2³ = 16423232453 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 (16423235461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2895726 + ... + 2901391.

It is an arithmetic number, because the mean of its divisors is an integer number (4107258103).

Almost surely, 2^16423232461 is an apocalyptic number.

It is an amenable number.

16423232461 is a deficient number, since it is larger than the sum of its proper divisors (5799951).

16423232461 is an equidigital number, since it uses as much as digits as its factorization.

16423232461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5799950.

The product of its digits is 41472, while the sum is 34.

The spelling of 16423232461 in words is "sixteen billion, four hundred twenty-three million, two hundred thirty-two thousand, four hundred sixty-one".