15221311484 has 12 divisors (see below), whose sum is σ = 27256767384. Its totient is φ = 7433663664.

The previous prime is 15221311439. The next prime is 15221311493. The reversal of 15221311484 is 48411312251.

It is a self number, because there is not a number n which added to its sum of digits gives 15221311484.

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 in 3 ways as a sum of consecutive naturals, for example, 44247827 + ... + 44248170.

It is an arithmetic number, because the mean of its divisors is an integer number (2271397282).

Almost surely, 2^15221311484 is an apocalyptic number.

It is an amenable number.

15221311484 is a deficient number, since it is larger than the sum of its proper divisors (12035455900).

15221311484 is a wasteful number, since it uses less digits than its factorization.

15221311484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88496044 (or 88496042 counting only the distinct ones).

The product of its digits is 7680, while the sum is 32.

The spelling of 15221311484 in words is "fifteen billion, two hundred twenty-one million, three hundred eleven thousand, four hundred eighty-four".