2144661696 has 84 divisors (see below), whose sum is σ = 6155311032. Its totient is φ = 713954304.

The previous prime is 2144661683. The next prime is 2144661709. The reversal of 2144661696 is 6961664412.

It is a happy number.

2144661696 is a `hidden beast` number, since 21 + 4 + 4 + 6 + 616 + 9 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (2144661683) and next prime (2144661709).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 546975 + ... + 550881.

Almost surely, 2^2144661696 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 2144661696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3077655516).

2144661696 is an abundant number, since it is smaller than the sum of its proper divisors (4010649336).

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

2144661696 is a wasteful number, since it uses less digits than its factorization.

2144661696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4878 (or 4865 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 2144661696 is about 46310.4922884653. The cubic root of 2144661696 is about 1289.5937859261.

The spelling of 2144661696 in words is "two billion, one hundred forty-four million, six hundred sixty-one thousand, six hundred ninety-six".