15597388159999 has 4 divisors (see below), whose sum is σ = 15608122771336. Its totient is φ = 15586653548664.

The previous prime is 15597388159979. The next prime is 15597388160017. The reversal of 15597388159999 is 99995188379551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15597388159999 - 2⁹ = 15597388159487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15597388159919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5367303489 + ... + 5367306394.

It is an arithmetic number, because the mean of its divisors is an integer number (3902030692834).

Almost surely, 2^{15597388159999} is an apocalyptic number.

15597388159999 is a deficient number, since it is larger than the sum of its proper divisors (10734611337).

15597388159999 is a wasteful number, since it uses less digits than its factorization.

15597388159999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10734611336.

The product of its digits is 9920232000, while the sum is 88.

The spelling of 15597388159999 in words is "fifteen trillion, five hundred ninety-seven billion, three hundred eighty-eight million, one hundred fifty-nine thousand, nine hundred ninety-nine".