108551721738233 has 2 divisors, whose sum is σ = 108551721738234. Its totient is φ = 108551721738232.

The previous prime is 108551721738167. The next prime is 108551721738259. The reversal of 108551721738233 is 332837127155801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107626764446224 + 924957292009 = 10374332^2 + 961747^2 .

It is a cyclic number.

It is not a de Polignac number, because 108551721738233 - 2¹⁸ = 108551721476089 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (108551721738283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54275860869116 + 54275860869117.

It is an arithmetic number, because the mean of its divisors is an integer number (54275860869117).

Almost surely, 2^{108551721738233} is an apocalyptic number.

It is an amenable number.

108551721738233 is a deficient number, since it is larger than the sum of its proper divisors (1).

108551721738233 is an equidigital number, since it uses as much as digits as its factorization.

108551721738233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8467200, while the sum is 56.

The spelling of 108551721738233 in words is "one hundred eight trillion, five hundred fifty-one billion, seven hundred twenty-one million, seven hundred thirty-eight thousand, two hundred thirty-three".