159820776166 has 4 divisors (see below), whose sum is σ = 239731164252. Its totient is φ = 79910388082.

The previous prime is 159820776127. The next prime is 159820776217. The reversal of 159820776166 is 661677028951.

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

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 159820776166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39955194040 + ... + 39955194043.

It is an arithmetic number, because the mean of its divisors is an integer number (59932791063).

Almost surely, 2^159820776166 is an apocalyptic number.

159820776166 is a deficient number, since it is larger than the sum of its proper divisors (79910388086).

159820776166 is an equidigital number, since it uses as much as digits as its factorization.

159820776166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79910388085.

The product of its (nonzero) digits is 7620480, while the sum is 58.

The spelling of 159820776166 in words is "one hundred fifty-nine billion, eight hundred twenty million, seven hundred seventy-six thousand, one hundred sixty-six".