20755284263 has 4 divisors (see below), whose sum is σ = 23720324880. Its totient is φ = 17790243648.

The previous prime is 20755284259. The next prime is 20755284283. The reversal of 20755284263 is 36248255702.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20755284263 - 2² = 20755284259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20755284283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1482520298 + ... + 1482520311.

It is an arithmetic number, because the mean of its divisors is an integer number (5930081220).

Almost surely, 2^20755284263 is an apocalyptic number.

20755284263 is a deficient number, since it is larger than the sum of its proper divisors (2965040617).

20755284263 is an equidigital number, since it uses as much as digits as its factorization.

20755284263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2965040616.

The product of its (nonzero) digits is 806400, while the sum is 44.

The spelling of 20755284263 in words is "twenty billion, seven hundred fifty-five million, two hundred eighty-four thousand, two hundred sixty-three".