15712243664 has 30 divisors (see below), whose sum is σ = 32964339366. Its totient is φ = 7251803520.

The previous prime is 15712243663. The next prime is 15712243681. The reversal of 15712243664 is 46634221751.

15712243664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 1218010000 + 14494233664 = 34900^2 + 120392^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15712243661) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2902667 + ... + 2908074.

Almost surely, 2^15712243664 is an apocalyptic number.

It is an amenable number.

15712243664 is an abundant number, since it is smaller than the sum of its proper divisors (17252095702).

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

15712243664 is a wasteful number, since it uses less digits than its factorization.

15712243664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5810775 (or 5810756 counting only the distinct ones).

The product of its digits is 241920, while the sum is 41.

The spelling of 15712243664 in words is "fifteen billion, seven hundred twelve million, two hundred forty-three thousand, six hundred sixty-four".