15642423224 has 8 divisors (see below), whose sum is σ = 29329543560. Its totient is φ = 7821211608.

The previous prime is 15642423193. The next prime is 15642423239. The reversal of 15642423224 is 42232424651.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 977651444 + ... + 977651459.

It is an arithmetic number, because the mean of its divisors is an integer number (3666192945).

Almost surely, 2^15642423224 is an apocalyptic number.

It is an amenable number.

15642423224 is a deficient number, since it is larger than the sum of its proper divisors (13687120336).

15642423224 is a wasteful number, since it uses less digits than its factorization.

15642423224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955302909 (or 1955302905 counting only the distinct ones).

The product of its digits is 92160, while the sum is 35.

Adding to 15642423224 its reverse (42232424651), we get a palindrome (57874847875).

The spelling of 15642423224 in words is "fifteen billion, six hundred forty-two million, four hundred twenty-three thousand, two hundred twenty-four".