159673255601 has 4 divisors (see below), whose sum is σ = 159674208804. Its totient is φ = 159672302400.

The previous prime is 159673255597. The next prime is 159673255607. The reversal of 159673255601 is 106552376951.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 106552376951 = 631 ⋅168862721.

It can be written as a sum of positive squares in 2 ways, for example, as 87763470001 + 71909785600 = 296249^2 + 268160^2 .

It is a cyclic number.

It is not a de Polignac number, because 159673255601 - 2² = 159673255597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 159673255601.

It is not an unprimeable number, because it can be changed into a prime (159673255607) 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, 151340 + ... + 585021.

It is an arithmetic number, because the mean of its divisors is an integer number (39918552201).

Almost surely, 2^159673255601 is an apocalyptic number.

It is an amenable number.

159673255601 is a deficient number, since it is larger than the sum of its proper divisors (953203).

159673255601 is an equidigital number, since it uses as much as digits as its factorization.

159673255601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953202.

The product of its (nonzero) digits is 1701000, while the sum is 50.

The spelling of 159673255601 in words is "one hundred fifty-nine billion, six hundred seventy-three million, two hundred fifty-five thousand, six hundred one".