159866520887 has 2 divisors, whose sum is σ = 159866520888. Its totient is φ = 159866520886.

The previous prime is 159866520883. The next prime is 159866520929. The reversal of 159866520887 is 788025668951.

It is a weak prime.

It is an emirp because it is prime and its reverse (788025668951) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 159866520887 - 2² = 159866520883 is a prime.

It is a super-3 number, since 3×159866520887³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159866520883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79933260443 + 79933260444.

It is an arithmetic number, because the mean of its divisors is an integer number (79933260444).

Almost surely, 2^159866520887 is an apocalyptic number.

159866520887 is a deficient number, since it is larger than the sum of its proper divisors (1).

159866520887 is an equidigital number, since it uses as much as digits as its factorization.

159866520887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58060800, while the sum is 65.

The spelling of 159866520887 in words is "one hundred fifty-nine billion, eight hundred sixty-six million, five hundred twenty thousand, eight hundred eighty-seven".