2061681168 has 40 divisors (see below), whose sum is σ = 5340109600. Its totient is φ = 685407744.

The previous prime is 2061681163. The next prime is 2061681197. The reversal of 2061681168 is 8611861602.

It is not an unprimeable number, because it can be changed into a prime (2061681163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38473 + ... + 74856.

It is an arithmetic number, because the mean of its divisors is an integer number (133502740).

Almost surely, 2^2061681168 is an apocalyptic number.

It is an amenable number.

2061681168 is an abundant number, since it is smaller than the sum of its proper divisors (3278428432).

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

2061681168 is a wasteful number, since it uses less digits than its factorization.

2061681168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113719 (or 113713 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 2061681168 is about 45405.7393729031. The cubic root of 2061681168 is about 1272.7423675711.

The spelling of 2061681168 in words is "two billion, sixty-one million, six hundred eighty-one thousand, one hundred sixty-eight".