2155888043171 has 8 divisors (see below), whose sum is σ = 2183244530880. Its totient is φ = 2128564458792.

The previous prime is 2155888043167. The next prime is 2155888043209. The reversal of 2155888043171 is 1713408885512.

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 2155888043171 - 2² = 2155888043167 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2155888043371) 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, 8093945 + ... + 8356058.

It is an arithmetic number, because the mean of its divisors is an integer number (272905566360).

Almost surely, 2^{2155888043171} is an apocalyptic number.

2155888043171 is a deficient number, since it is larger than the sum of its proper divisors (27356487709).

2155888043171 is a wasteful number, since it uses less digits than its factorization.

2155888043171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16451665.

The product of its (nonzero) digits is 2150400, while the sum is 53.

The spelling of 2155888043171 in words is "two trillion, one hundred fifty-five billion, eight hundred eighty-eight million, forty-three thousand, one hundred seventy-one".