20792788756 has 6 divisors (see below), whose sum is σ = 36387380330. Its totient is φ = 10396394376.

The previous prime is 20792788727. The next prime is 20792788763. The reversal of 20792788756 is 65788729702.

It can be written as a sum of positive squares in only one way, i.e., 20040932356 + 751856400 = 141566^2 + 27420^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20792788694 and 20792788703.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 2599098591 + ... + 2599098598.

Almost surely, 2^20792788756 is an apocalyptic number.

It is an amenable number.

20792788756 is a deficient number, since it is larger than the sum of its proper divisors (15594591574).

20792788756 is a wasteful number, since it uses less digits than its factorization.

20792788756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5198197193 (or 5198197191 counting only the distinct ones).

The product of its (nonzero) digits is 23708160, while the sum is 61.

The spelling of 20792788756 in words is "twenty billion, seven hundred ninety-two million, seven hundred eighty-eight thousand, seven hundred fifty-six".