16623463433 has 4 divisors (see below), whose sum is σ = 17196686340. Its totient is φ = 16050240528.

The previous prime is 16623463393. The next prime is 16623463453. The reversal of 16623463433 is 33436432661.

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 8710115584 + 7913347849 = 93328^2 + 88957^2 .

It is a cyclic number.

It is not a de Polignac number, because 16623463433 - 2⁶ = 16623463369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16623463453) 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, 286611410 + ... + 286611467.

It is an arithmetic number, because the mean of its divisors is an integer number (4299171585).

Almost surely, 2^16623463433 is an apocalyptic number.

It is an amenable number.

16623463433 is a deficient number, since it is larger than the sum of its proper divisors (573222907).

16623463433 is an equidigital number, since it uses as much as digits as its factorization.

16623463433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573222906.

The product of its digits is 559872, while the sum is 41.

The spelling of 16623463433 in words is "sixteen billion, six hundred twenty-three million, four hundred sixty-three thousand, four hundred thirty-three".