281838911911 has 2 divisors, whose sum is σ = 281838911912. Its totient is φ = 281838911910.

The previous prime is 281838911909. The next prime is 281838911933. The reversal of 281838911911 is 119119838182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 281838911911 - 2¹ = 281838911909 is a prime.

Together with 281838911909, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (281838914911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140919455955 + 140919455956.

It is an arithmetic number, because the mean of its divisors is an integer number (140919455956).

Almost surely, 2^281838911911 is an apocalyptic number.

281838911911 is a deficient number, since it is larger than the sum of its proper divisors (1).

281838911911 is an equidigital number, since it uses as much as digits as its factorization.

281838911911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 52.

The spelling of 281838911911 in words is "two hundred eighty-one billion, eight hundred thirty-eight million, nine hundred eleven thousand, nine hundred eleven".