2151666160 has 80 divisors (see below), whose sum is σ = 5753935296. Its totient is φ = 732985344.

The previous prime is 2151666133. The next prime is 2151666173. The reversal of 2151666160 is 616661512.

It is a happy number.

2151666160 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75684 + ... + 100156.

Almost surely, 2^2151666160 is an apocalyptic number.

2151666160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2151666160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2876967648).

2151666160 is an abundant number, since it is smaller than the sum of its proper divisors (3602269136).

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

2151666160 is a wasteful number, since it uses less digits than its factorization.

2151666160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24650 (or 24644 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 2151666160 is about 46386.0556633133. The cubic root of 2151666160 is about 1290.9961978215.

The spelling of 2151666160 in words is "two billion, one hundred fifty-one million, six hundred sixty-six thousand, one hundred sixty".