159808992667 has 4 divisors (see below), whose sum is σ = 159842634336. Its totient is φ = 159775351000.

The previous prime is 159808992653. The next prime is 159808992691. The reversal of 159808992667 is 766299808951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 766299808951 = 1979 ⋅387215669.

It is a cyclic number.

It is not a de Polignac number, because 159808992667 - 2²³ = 159800604059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 159808992596 and 159808992605.

It is not an unprimeable number, because it can be changed into a prime (159808992617) 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, 16813708 + ... + 16823209.

It is an arithmetic number, because the mean of its divisors is an integer number (39960658584).

Almost surely, 2^159808992667 is an apocalyptic number.

159808992667 is a deficient number, since it is larger than the sum of its proper divisors (33641669).

159808992667 is an equidigital number, since it uses as much as digits as its factorization.

159808992667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33641668.

The product of its (nonzero) digits is 117573120, while the sum is 70.

The spelling of 159808992667 in words is "one hundred fifty-nine billion, eight hundred eight million, nine hundred ninety-two thousand, six hundred sixty-seven".