159999999999 has 32 divisors (see below), whose sum is σ = 245706399744. Its totient is φ = 90718639200.

The previous prime is 159999999983. The next prime is 160000000003. The reversal of 159999999999 is 999999999951.

It is a happy number.

It is a Cunningham number, because it is equal to 400000²-1.

It is not a de Polignac number, because 159999999999 - 2⁴ = 159999999983 is a prime.

It is a super-9 number, since 9×159999999999⁹ (a number of 102 digits) contains 999999999 as substring.

159999999999 is a modest number, since divided by 999999 gives 159999 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159999999979) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2771422 + ... + 2828564.

It is an arithmetic number, because the mean of its divisors is an integer number (7678324992).

Almost surely, 2^159999999999 is an apocalyptic number.

159999999999 is a deficient number, since it is larger than the sum of its proper divisors (85706399745).

159999999999 is a wasteful number, since it uses less digits than its factorization.

159999999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58187.

The product of its digits is 17433922005, while the sum is 96.

The spelling of 159999999999 in words is "one hundred fifty-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".