2166851696 has 40 divisors (see below), whose sum is σ = 4358761200. Its totient is φ = 1042280960.

The previous prime is 2166851651. The next prime is 2166851707. The reversal of 2166851696 is 6961586612.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122075 + ... + 138693.

It is an arithmetic number, because the mean of its divisors is an integer number (108969030).

Almost surely, 2^2166851696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2166851696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2179380600).

2166851696 is an abundant number, since it is smaller than the sum of its proper divisors (2191909504).

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

2166851696 is a wasteful number, since it uses less digits than its factorization.

2166851696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16937 (or 16931 counting only the distinct ones).

The product of its digits is 933120, while the sum is 50.

The square root of 2166851696 is about 46549.4543039980. The cubic root of 2166851696 is about 1294.0261798280.

The spelling of 2166851696 in words is "two billion, one hundred sixty-six million, eight hundred fifty-one thousand, six hundred ninety-six".