20027088269 has 2 divisors, whose sum is σ = 20027088270. Its totient is φ = 20027088268.

The previous prime is 20027088251. The next prime is 20027088271. The reversal of 20027088269 is 96288072002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18390885769 + 1636202500 = 135613^2 + 40450^2 .

It is a cyclic number.

It is not a de Polignac number, because 20027088269 - 2²⁸ = 19758652813 is a prime.

It is a super-2 number, since 2×20027088269² (a number of 21 digits) contains 22 as substring.

Together with 20027088271, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20027088209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10013544134 + 10013544135.

It is an arithmetic number, because the mean of its divisors is an integer number (10013544135).

Almost surely, 2^20027088269 is an apocalyptic number.

It is an amenable number.

20027088269 is a deficient number, since it is larger than the sum of its proper divisors (1).

20027088269 is an equidigital number, since it uses as much as digits as its factorization.

20027088269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 20027088269 in words is "twenty billion, twenty-seven million, eighty-eight thousand, two hundred sixty-nine".