20354181119 has 2 divisors, whose sum is σ = 20354181120. Its totient is φ = 20354181118.

The previous prime is 20354181061. The next prime is 20354181121. The reversal of 20354181119 is 91118145302.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20354181119 - 2¹² = 20354177023 is a prime.

It is a super-2 number, since 2×20354181119² (a number of 21 digits) contains 22 as substring.

Together with 20354181121, 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 (20354181179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10177090559 + 10177090560.

It is an arithmetic number, because the mean of its divisors is an integer number (10177090560).

Almost surely, 2^20354181119 is an apocalyptic number.

20354181119 is a deficient number, since it is larger than the sum of its proper divisors (1).

20354181119 is an equidigital number, since it uses as much as digits as its factorization.

20354181119 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 35.

The spelling of 20354181119 in words is "twenty billion, three hundred fifty-four million, one hundred eighty-one thousand, one hundred nineteen".