20955118363 has 2 divisors, whose sum is σ = 20955118364. Its totient is φ = 20955118362.

The previous prime is 20955118351. The next prime is 20955118367. The reversal of 20955118363 is 36381155902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20955118363 - 2¹³ = 20955110171 is a prime.

It is not a weakly prime, because it can be changed into another prime (20955118367) by changing a digit.

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, 10477559181 + 10477559182.

It is an arithmetic number, because the mean of its divisors is an integer number (10477559182).

Almost surely, 2^20955118363 is an apocalyptic number.

20955118363 is a deficient number, since it is larger than the sum of its proper divisors (1).

20955118363 is an equidigital number, since it uses as much as digits as its factorization.

20955118363 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 20955118363 in words is "twenty billion, nine hundred fifty-five million, one hundred eighteen thousand, three hundred sixty-three".