2061866672 has 40 divisors (see below), whose sum is σ = 4038967680. Its totient is φ = 1019589120.

The previous prime is 2061866663. The next prime is 2061866689. The reversal of 2061866672 is 2766681602.

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 7 ways as a sum of consecutive naturals, for example, 1727708 + ... + 1728900.

It is an arithmetic number, because the mean of its divisors is an integer number (100974192).

Almost surely, 2^2061866672 is an apocalyptic number.

It is an amenable number.

2061866672 is a deficient number, since it is larger than the sum of its proper divisors (1977101008).

2061866672 is a wasteful number, since it uses less digits than its factorization.

2061866672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2301 (or 2295 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 2061866672 is about 45407.7820643114. The cubic root of 2061866672 is about 1272.7805389630.

The spelling of 2061866672 in words is "two billion, sixty-one million, eight hundred sixty-six thousand, six hundred seventy-two".