15321313630 has 48 divisors (see below), whose sum is σ = 32100355296. Its totient is φ = 5249845440.

The previous prime is 15321313627. The next prime is 15321313643. The reversal of 15321313630 is 3631312351.

15321313630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 888652 + ... + 905728.

It is an arithmetic number, because the mean of its divisors is an integer number (668757402).

Almost surely, 2^15321313630 is an apocalyptic number.

15321313630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15321313630 is an abundant number, since it is smaller than the sum of its proper divisors (16779041666).

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

15321313630 is a wasteful number, since it uses less digits than its factorization.

15321313630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18929 (or 18922 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 28.

Adding to 15321313630 its reverse (3631312351), we get a palindrome (18952625981).

The spelling of 15321313630 in words is "fifteen billion, three hundred twenty-one million, three hundred thirteen thousand, six hundred thirty".