2056171101166 has 24 divisors (see below), whose sum is σ = 3863794049640. Its totient is φ = 813430325232.

The previous prime is 2056171101161. The next prime is 2056171101191. The reversal of 2056171101166 is 6611011716502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056171101161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 806973256 + ... + 806975803.

It is an arithmetic number, because the mean of its divisors is an integer number (160991418735).

Almost surely, 2^{2056171101166} is an apocalyptic number.

2056171101166 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2056171101166 is a deficient number, since it is larger than the sum of its proper divisors (1807622948474).

2056171101166 is a wasteful number, since it uses less digits than its factorization.

2056171101166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613949088 (or 1613949081 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 37.

Adding to 2056171101166 its reverse (6611011716502), we get a palindrome (8667182817668).

The spelling of 2056171101166 in words is "two trillion, fifty-six billion, one hundred seventy-one million, one hundred one thousand, one hundred sixty-six".