2155170611171 has 16 divisors (see below), whose sum is σ = 2163403120128. Its totient is φ = 2146960015200.

The previous prime is 2155170611141. The next prime is 2155170611197. The reversal of 2155170611171 is 1711160715512.

It is a cyclic number.

It is not a de Polignac number, because 2155170611171 - 2²² = 2155166416867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2155170611141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 676236440 + ... + 676239626.

It is an arithmetic number, because the mean of its divisors is an integer number (135212695008).

Almost surely, 2^{2155170611171} is an apocalyptic number.

2155170611171 is a deficient number, since it is larger than the sum of its proper divisors (8232508957).

2155170611171 is a wasteful number, since it uses less digits than its factorization.

2155170611171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5882.

The product of its (nonzero) digits is 14700, while the sum is 38.

The spelling of 2155170611171 in words is "two trillion, one hundred fifty-five billion, one hundred seventy million, six hundred eleven thousand, one hundred seventy-one".