15442423144 has 32 divisors (see below), whose sum is σ = 30671887680. Its totient is φ = 7263672064.

The previous prime is 15442423133. The next prime is 15442423159. The reversal of 15442423144 is 44132424451.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283269 + ... + 333355.

It is an arithmetic number, because the mean of its divisors is an integer number (958496490).

Almost surely, 2^15442423144 is an apocalyptic number.

It is an amenable number.

15442423144 is a deficient number, since it is larger than the sum of its proper divisors (15229464536).

15442423144 is a wasteful number, since it uses less digits than its factorization.

15442423144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52377 (or 52373 counting only the distinct ones).

The product of its digits is 61440, while the sum is 34.

Adding to 15442423144 its reverse (44132424451), we get a palindrome (59574847595).

The spelling of 15442423144 in words is "fifteen billion, four hundred forty-two million, four hundred twenty-three thousand, one hundred forty-four".