2051666683 has 24 divisors (see below), whose sum is σ = 2455765200. Its totient is φ = 1705999680.

The previous prime is 2051666599. The next prime is 2051666789. The reversal of 2051666683 is 3866661502.

It is a de Polignac number, because none of the positive numbers 2^k-2051666683 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2051666083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51285 + ... + 82057.

It is an arithmetic number, because the mean of its divisors is an integer number (102323550).

Almost surely, 2^2051666683 is an apocalyptic number.

2051666683 is a deficient number, since it is larger than the sum of its proper divisors (404098517).

2051666683 is a wasteful number, since it uses less digits than its factorization.

2051666683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30843 (or 30832 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 2051666683 is about 45295.3273859457. The cubic root of 2051666683 is about 1270.6782668719.

The spelling of 2051666683 in words is "two billion, fifty-one million, six hundred sixty-six thousand, six hundred eighty-three".