15223023312 has 160 divisors (see below), whose sum is σ = 45349454592. Its totient is φ = 4310433792.

The previous prime is 15223023293. The next prime is 15223023313. The reversal of 15223023312 is 21332032251.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15223023313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26382768 + ... + 26383344.

Almost surely, 2^15223023312 is an apocalyptic number.

15223023312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15223023312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22674727296).

15223023312 is an abundant number, since it is smaller than the sum of its proper divisors (30126431280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15223023312 is a wasteful number, since it uses less digits than its factorization.

15223023312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165 (or 1159 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 15223023312 its reverse (21332032251), we get a palindrome (36555055563).

The spelling of 15223023312 in words is "fifteen billion, two hundred twenty-three million, twenty-three thousand, three hundred twelve".