20081159999 has 8 divisors (see below), whose sum is σ = 21007044960. Its totient is φ = 19159674336.

The previous prime is 20081159993. The next prime is 20081160007. The reversal of 20081159999 is 99995118002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20081159999 - 2¹² = 20081155903 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20081159999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20081159993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1090484 + ... + 1108745.

It is an arithmetic number, because the mean of its divisors is an integer number (2625880620).

Almost surely, 2^20081159999 is an apocalyptic number.

20081159999 is a deficient number, since it is larger than the sum of its proper divisors (925884961).

20081159999 is a wasteful number, since it uses less digits than its factorization.

20081159999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199649.

The product of its (nonzero) digits is 524880, while the sum is 53.

The spelling of 20081159999 in words is "twenty billion, eighty-one million, one hundred fifty-nine thousand, nine hundred ninety-nine".