2017166011521 has 8 divisors (see below), whose sum is σ = 2690253101664. Its totient is φ = 1344428131200.

The previous prime is 2017166011513. The next prime is 2017166011537. The reversal of 2017166011521 is 1251106617102.

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

It is not a de Polignac number, because 2017166011521 - 2³ = 2017166011513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2017166010521) 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, 87288976 + ... + 87312081.

It is an arithmetic number, because the mean of its divisors is an integer number (336281637708).

Almost surely, 2^{2017166011521} is an apocalyptic number.

It is an amenable number.

2017166011521 is a deficient number, since it is larger than the sum of its proper divisors (673087090143).

2017166011521 is a wasteful number, since it uses less digits than its factorization.

2017166011521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174604911.

The product of its (nonzero) digits is 5040, while the sum is 33.

The spelling of 2017166011521 in words is "two trillion, seventeen billion, one hundred sixty-six million, eleven thousand, five hundred twenty-one".