15328431616 has 80 divisors (see below), whose sum is σ = 33475178880. Its totient is φ = 6980567040.

The previous prime is 15328431551. The next prime is 15328431637. The reversal of 15328431616 is 61613482351.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 241420 + ... + 298228.

It is an arithmetic number, because the mean of its divisors is an integer number (418439736).

Almost surely, 2^15328431616 is an apocalyptic number.

15328431616 is a gapful number since it is divisible by the number (16) 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 15328431616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16737589440).

15328431616 is an abundant number, since it is smaller than the sum of its proper divisors (18146747264).

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

15328431616 is an equidigital number, since it uses as much as digits as its factorization.

15328431616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56875 (or 56859 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

It can be divided in two parts, 153284 and 31616, that added together give a square (184900 = 430²).

The spelling of 15328431616 in words is "fifteen billion, three hundred twenty-eight million, four hundred thirty-one thousand, six hundred sixteen".