15444240452 has 6 divisors (see below), whose sum is σ = 27027420798. Its totient is φ = 7722120224.

The previous prime is 15444240443. The next prime is 15444240457. The reversal of 15444240452 is 25404244451.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12297479236 + 3146761216 = 110894^2 + 56096^2 .

It is not an unprimeable number, because it can be changed into a prime (15444240457) by changing a digit.

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 as a sum of consecutive naturals, namely, 1930530053 + ... + 1930530060.

It is an arithmetic number, because the mean of its divisors is an integer number (4504570133).

Almost surely, 2^15444240452 is an apocalyptic number.

It is an amenable number.

15444240452 is a deficient number, since it is larger than the sum of its proper divisors (11583180346).

15444240452 is a wasteful number, since it uses less digits than its factorization.

15444240452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3861060117 (or 3861060115 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 35.

The spelling of 15444240452 in words is "fifteen billion, four hundred forty-four million, two hundred forty thousand, four hundred fifty-two".