15132001444 has 72 divisors (see below), whose sum is σ = 33498255672. Its totient is φ = 5938652160.

The previous prime is 15132001403. The next prime is 15132001453. The reversal of 15132001444 is 44410023151.

It can be written as a sum of positive squares in 4 ways, for example, as 10756178944 + 4375822500 = 103712^2 + 66150^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61914 + ... + 184654.

It is an arithmetic number, because the mean of its divisors is an integer number (465253551).

Almost surely, 2^15132001444 is an apocalyptic number.

15132001444 is a gapful number since it is divisible by the number (14) 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 15132001444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16749127836).

15132001444 is an abundant number, since it is smaller than the sum of its proper divisors (18366254228).

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

15132001444 is a wasteful number, since it uses less digits than its factorization.

15132001444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122813 (or 122804 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 15132001444 its reverse (44410023151), we get a palindrome (59542024595).

The spelling of 15132001444 in words is "fifteen billion, one hundred thirty-two million, one thousand, four hundred forty-four".