159905054879 has 4 divisors (see below), whose sum is σ = 159922630176. Its totient is φ = 159887479584.

The previous prime is 159905054839. The next prime is 159905054927. The reversal of 159905054879 is 978450509951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 978450509951 = 617 ⋅1585819303.

It is a cyclic number.

It is not a de Polignac number, because 159905054879 - 2³² = 155610087583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159905054839) 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, 8773994 + ... + 8792199.

It is an arithmetic number, because the mean of its divisors is an integer number (39980657544).

Almost surely, 2^159905054879 is an apocalyptic number.

159905054879 is a deficient number, since it is larger than the sum of its proper divisors (17575297).

159905054879 is an equidigital number, since it uses as much as digits as its factorization.

159905054879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17575296.

The product of its (nonzero) digits is 20412000, while the sum is 62.

The spelling of 159905054879 in words is "one hundred fifty-nine billion, nine hundred five million, fifty-four thousand, eight hundred seventy-nine".