15799968648 has 192 divisors, whose sum is σ = 46379174400. Its totient is φ = 4976899200.

The previous prime is 15799968641. The next prime is 15799968677. The reversal of 15799968648 is 84686999751.

15799968648 is a `hidden beast` number, since 1 + 579 + 9 + 9 + 6 + 8 + 6 + 48 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (15799968641) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 74881263 + ... + 74881473.

It is an arithmetic number, because the mean of its divisors is an integer number (241558200).

Almost surely, 2^15799968648 is an apocalyptic number.

15799968648 is a gapful number since it is divisible by the number (18) 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 15799968648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23189587200).

15799968648 is an abundant number, since it is smaller than the sum of its proper divisors (30579205752).

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

15799968648 is a wasteful number, since it uses less digits than its factorization.

15799968648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521 (or 300 counting only the distinct ones).

The product of its digits is 235146240, while the sum is 72.

The spelling of 15799968648 in words is "fifteen billion, seven hundred ninety-nine million, nine hundred sixty-eight thousand, six hundred forty-eight".