16159845121 has 8 divisors (see below), whose sum is σ = 18469693760. Its totient is φ = 13850321328.

The previous prime is 16159845113. The next prime is 16159845133. The reversal of 16159845121 is 12154895161.

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 16159845121 - 2³ = 16159845113 is a prime.

It is a super-2 number, since 2×16159845121² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16159845521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36835 + ... + 183511.

It is an arithmetic number, because the mean of its divisors is an integer number (2308711720).

Almost surely, 2^16159845121 is an apocalyptic number.

It is an amenable number.

16159845121 is a deficient number, since it is larger than the sum of its proper divisors (2309848639).

16159845121 is a wasteful number, since it uses less digits than its factorization.

16159845121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162423.

The product of its digits is 86400, while the sum is 43.

The spelling of 16159845121 in words is "sixteen billion, one hundred fifty-nine million, eight hundred forty-five thousand, one hundred twenty-one".