20555756763 has 8 divisors (see below), whose sum is σ = 27872212800. Its totient is φ = 13471569288.

The previous prime is 20555756729. The next prime is 20555756801. The reversal of 20555756763 is 36765755502.

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

It is not a de Polignac number, because 20555756763 - 2¹⁴ = 20555740379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20555758763) 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, 58066933 + ... + 58067286.

It is an arithmetic number, because the mean of its divisors is an integer number (3484026600).

Almost surely, 2^20555756763 is an apocalyptic number.

20555756763 is a deficient number, since it is larger than the sum of its proper divisors (7316456037).

20555756763 is a wasteful number, since it uses less digits than its factorization.

20555756763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116134281.

The product of its (nonzero) digits is 6615000, while the sum is 51.

The spelling of 20555756763 in words is "twenty billion, five hundred fifty-five million, seven hundred fifty-six thousand, seven hundred sixty-three".