15320320004 has 12 divisors (see below), whose sum is σ = 29247883728. Its totient is φ = 6963781800.

The previous prime is 15320319991. The next prime is 15320320009. The reversal of 15320320004 is 40002302351.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (15320320009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174094502 + ... + 174094589.

It is an arithmetic number, because the mean of its divisors is an integer number (2437323644).

Almost surely, 2^15320320004 is an apocalyptic number.

It is an amenable number.

15320320004 is a deficient number, since it is larger than the sum of its proper divisors (13927563724).

15320320004 is a wasteful number, since it uses less digits than its factorization.

15320320004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348189106 (or 348189104 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 15320320004 its reverse (40002302351), we get a palindrome (55322622355).

The spelling of 15320320004 in words is "fifteen billion, three hundred twenty million, three hundred twenty thousand, four".