15423223340 has 72 divisors (see below), whose sum is σ = 37894932432. Its totient is φ = 5257338240.

The previous prime is 15423223337. The next prime is 15423223349. The reversal of 15423223340 is 4332232451.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (15423223349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124055 + ... + 215025.

It is an arithmetic number, because the mean of its divisors is an integer number (526318506).

Almost surely, 2^15423223340 is an apocalyptic number.

15423223340 is a gapful number since it is divisible by the number (10) 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 15423223340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18947466216).

15423223340 is an abundant number, since it is smaller than the sum of its proper divisors (22471709092).

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

15423223340 is a wasteful number, since it uses less digits than its factorization.

15423223340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91167 (or 91158 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 15423223340 its reverse (4332232451), we get a palindrome (19755455791).

The spelling of 15423223340 in words is "fifteen billion, four hundred twenty-three million, two hundred twenty-three thousand, three hundred forty".