20782028703 has 8 divisors (see below), whose sum is σ = 27854447616. Its totient is φ = 13782147800.

The previous prime is 20782028593. The next prime is 20782028719. The reversal of 20782028703 is 30782028702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20782028703 - 2⁸ = 20782028447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20782028203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18133833 + ... + 18134978.

It is an arithmetic number, because the mean of its divisors is an integer number (3481805952).

Almost surely, 2^20782028703 is an apocalyptic number.

20782028703 is a deficient number, since it is larger than the sum of its proper divisors (7072418913).

20782028703 is a wasteful number, since it uses less digits than its factorization.

20782028703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36269005.

The product of its (nonzero) digits is 75264, while the sum is 39.

Subtracting 20782028703 from its reverse (30782028702), we obtain a palindrome (9999999999).

The spelling of 20782028703 in words is "twenty billion, seven hundred eighty-two million, twenty-eight thousand, seven hundred three".