15231421344 has 48 divisors (see below), whose sum is σ = 40110299712. Its totient is φ = 5060909568.

The previous prime is 15231421339. The next prime is 15231421393. The reversal of 15231421344 is 44312413251.

15231421344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223404 + ... + 283499.

It is an arithmetic number, because the mean of its divisors is an integer number (835631244).

Almost surely, 2^15231421344 is an apocalyptic number.

It is an amenable number.

15231421344 is an abundant number, since it is smaller than the sum of its proper divisors (24878878368).

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

15231421344 is a wasteful number, since it uses less digits than its factorization.

15231421344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507229 (or 507221 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

Adding to 15231421344 its reverse (44312413251), we get a palindrome (59543834595).

The spelling of 15231421344 in words is "fifteen billion, two hundred thirty-one million, four hundred twenty-one thousand, three hundred forty-four".