23221316518 has 8 divisors (see below), whose sum is σ = 34833965040. Its totient is φ = 11609994840.

The previous prime is 23221316453. The next prime is 23221316519. The reversal of 23221316518 is 81561312232.

23221316518 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23221316519) 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, 286738 + ... + 358693.

It is an arithmetic number, because the mean of its divisors is an integer number (4354245630).

Almost surely, 2^23221316518 is an apocalyptic number.

23221316518 is a deficient number, since it is larger than the sum of its proper divisors (11612648522).

23221316518 is a wasteful number, since it uses less digits than its factorization.

23221316518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663422.

The product of its digits is 17280, while the sum is 34.

The spelling of 23221316518 in words is "twenty-three billion, two hundred twenty-one million, three hundred sixteen thousand, five hundred eighteen".