20843992706 has 32 divisors (see below), whose sum is σ = 33939440640. Its totient is φ = 9562124800.

The previous prime is 20843992681. The next prime is 20843992717. The reversal of 20843992706 is 60729934802.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2000771 + ... + 2011161.

It is an arithmetic number, because the mean of its divisors is an integer number (1060607520).

Almost surely, 2^20843992706 is an apocalyptic number.

20843992706 is a deficient number, since it is larger than the sum of its proper divisors (13095447934).

20843992706 is a wasteful number, since it uses less digits than its factorization.

20843992706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11890.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 20843992706 in words is "twenty billion, eight hundred forty-three million, nine hundred ninety-two thousand, seven hundred six".