159122013521 has 8 divisors (see below), whose sum is σ = 159554532384. Its totient is φ = 158689887840.

The previous prime is 159122013509. The next prime is 159122013527. The reversal of 159122013521 is 125310221951.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 159122013521 - 2³⁰ = 158048271697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159122013527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 721466 + ... + 915836.

It is an arithmetic number, because the mean of its divisors is an integer number (19944316548).

Almost surely, 2^159122013521 is an apocalyptic number.

It is an amenable number.

159122013521 is a deficient number, since it is larger than the sum of its proper divisors (432518863).

159122013521 is a wasteful number, since it uses less digits than its factorization.

159122013521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196591.

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 159122013521 in words is "one hundred fifty-nine billion, one hundred twenty-two million, thirteen thousand, five hundred twenty-one".