15799664322 has 162 divisors, whose sum is σ = 38680106283. Its totient is φ = 4658786496.

The previous prime is 15799664311. The next prime is 15799664327. The reversal of 15799664322 is 22346699751.

15799664322 is a `hidden beast` number, since 1 + 579 + 9 + 6 + 6 + 43 + 22 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 5387706801 + 10411957521 = 73401^2 + 102039^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=88881.

It is not an unprimeable number, because it can be changed into a prime (15799664327) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 298106848 + ... + 298106900.

Almost surely, 2^15799664322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15799664322

15799664322 is an abundant number, since it is smaller than the sum of its proper divisors (22880441961).

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

15799664322 is a wasteful number, since it uses less digits than its factorization.

15799664322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 114 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The spelling of 15799664322 in words is "fifteen billion, seven hundred ninety-nine million, six hundred sixty-four thousand, three hundred twenty-two".