2168271680 has 56 divisors (see below), whose sum is σ = 5273088768. Its totient is φ = 848849408.

The previous prime is 2168271661. The next prime is 2168271713. The reversal of 2168271680 is 861728612.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57044 + ... + 87123.

Almost surely, 2^2168271680 is an apocalyptic number.

2168271680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2168271680 is an abundant number, since it is smaller than the sum of its proper divisors (3104817088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2168271680 is a wasteful number, since it uses less digits than its factorization.

2168271680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144231 (or 144221 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 2168271680 is about 46564.7042297060. The cubic root of 2168271680 is about 1294.3087857299.

The spelling of 2168271680 in words is "two billion, one hundred sixty-eight million, two hundred seventy-one thousand, six hundred eighty".