15444323013 has 48 divisors (see below), whose sum is σ = 25399253376. Its totient is φ = 8148940800.

The previous prime is 15444322973. The next prime is 15444323017. The reversal of 15444323013 is 31032344451.

15444323013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15444323013 - 2¹² = 15444318917 is a prime.

It is a super-2 number, since 2×15444323013² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15444323017) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 995113 + ... + 1010513.

It is an arithmetic number, because the mean of its divisors is an integer number (529151112).

Almost surely, 2^15444323013 is an apocalyptic number.

It is an amenable number.

15444323013 is a deficient number, since it is larger than the sum of its proper divisors (9954930363).

15444323013 is a wasteful number, since it uses less digits than its factorization.

15444323013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15534 (or 15481 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 15444323013 its reverse (31032344451), we get a palindrome (46476667464).

The spelling of 15444323013 in words is "fifteen billion, four hundred forty-four million, three hundred twenty-three thousand, thirteen".