15968030720 has 78 divisors (see below), whose sum is σ = 38362040658. Its totient is φ = 6379978752.

The previous prime is 15968030719. The next prime is 15968030723. The reversal of 15968030720 is 2703086951.

It can be written as a sum of positive squares in only one way, i.e., 12774424576 + 3193606144 = 113024^2 + 56512^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15968030723) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18083399 + ... + 18084281.

Almost surely, 2^15968030720 is an apocalyptic number.

15968030720 is a gapful number since it is divisible by the number (10) 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 15968030720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19181020329).

15968030720 is an abundant number, since it is smaller than the sum of its proper divisors (22394009938).

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

15968030720 is an frugal number, since it uses more digits than its factorization.

15968030720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1795 (or 890 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 15968030720 in words is "fifteen billion, nine hundred sixty-eight million, thirty thousand, seven hundred twenty".