15722134223 has 4 divisors (see below), whose sum is σ = 15722779800. Its totient is φ = 15721488648.

The previous prime is 15722134213. The next prime is 15722134237. The reversal of 15722134223 is 32243122751.

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

It is a cyclic number.

It is not a de Polignac number, because 15722134223 - 2⁶ = 15722134159 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15722134223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15722134213) 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, 284765 + ... + 335462.

It is an arithmetic number, because the mean of its divisors is an integer number (3930694950).

Almost surely, 2^15722134223 is an apocalyptic number.

15722134223 is a deficient number, since it is larger than the sum of its proper divisors (645577).

15722134223 is an equidigital number, since it uses as much as digits as its factorization.

15722134223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645576.

The product of its digits is 20160, while the sum is 32.

Adding to 15722134223 its reverse (32243122751), we get a palindrome (47965256974).

The spelling of 15722134223 in words is "fifteen billion, seven hundred twenty-two million, one hundred thirty-four thousand, two hundred twenty-three".