20766785283 has 24 divisors (see below), whose sum is σ = 30498620880. Its totient is φ = 13612916160.

The previous prime is 20766785257. The next prime is 20766785317. The reversal of 20766785283 is 38258766702.

It is not a de Polignac number, because 20766785283 - 2¹⁸ = 20766523139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20766785203) 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, 2462448 + ... + 2470866.

It is an arithmetic number, because the mean of its divisors is an integer number (1270775870).

Almost surely, 2^20766785283 is an apocalyptic number.

20766785283 is a deficient number, since it is larger than the sum of its proper divisors (9731835597).

20766785283 is a wasteful number, since it uses less digits than its factorization.

20766785283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12979 (or 12976 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 54.

The spelling of 20766785283 in words is "twenty billion, seven hundred sixty-six million, seven hundred eighty-five thousand, two hundred eighty-three".