20755756853 has 16 divisors (see below), whose sum is σ = 23331463680. Its totient is φ = 18320442624.

The previous prime is 20755756831. The next prime is 20755756859. The reversal of 20755756853 is 35865755702.

It is a cyclic number.

It is not a de Polignac number, because 20755756853 - 2¹⁴ = 20755740469 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20755756795 and 20755756804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20755756859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1162925 + ... + 1180637.

It is an arithmetic number, because the mean of its divisors is an integer number (1458216480).

Almost surely, 2^20755756853 is an apocalyptic number.

20755756853 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20755756853 is a deficient number, since it is larger than the sum of its proper divisors (2575706827).

20755756853 is a wasteful number, since it uses less digits than its factorization.

20755756853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21668.

The product of its (nonzero) digits is 8820000, while the sum is 53.

The spelling of 20755756853 in words is "twenty billion, seven hundred fifty-five million, seven hundred fifty-six thousand, eight hundred fifty-three".