16623214831 has 4 divisors (see below), whose sum is σ = 16719302952. Its totient is φ = 16527126712.

The previous prime is 16623214807. The next prime is 16623214843. The reversal of 16623214831 is 13841232661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13841232661 = 94151 ⋅147011.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16623214831 is a prime.

It is a super-2 number, since 2×16623214831² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16623214631) 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, 48043801 + ... + 48044146.

It is an arithmetic number, because the mean of its divisors is an integer number (4179825738).

Almost surely, 2^16623214831 is an apocalyptic number.

16623214831 is a deficient number, since it is larger than the sum of its proper divisors (96088121).

16623214831 is an equidigital number, since it uses as much as digits as its factorization.

16623214831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96088120.

The product of its digits is 41472, while the sum is 37.

The spelling of 16623214831 in words is "sixteen billion, six hundred twenty-three million, two hundred fourteen thousand, eight hundred thirty-one".