20355410111 has 2 divisors, whose sum is σ = 20355410112. Its totient is φ = 20355410110.

The previous prime is 20355410081. The next prime is 20355410137. The reversal of 20355410111 is 11101455302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20355410111 - 2¹⁴ = 20355393727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20355410611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10177705055 + 10177705056.

It is an arithmetic number, because the mean of its divisors is an integer number (10177705056).

Almost surely, 2^20355410111 is an apocalyptic number.

20355410111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20355410111 is an equidigital number, since it uses as much as digits as its factorization.

20355410111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 20355410111 its reverse (11101455302), we get a palindrome (31456865413).

The spelling of 20355410111 in words is "twenty billion, three hundred fifty-five million, four hundred ten thousand, one hundred eleven".