818852742101 has 2 divisors, whose sum is σ = 818852742102. Its totient is φ = 818852742100.

The previous prime is 818852742089. The next prime is 818852742107. The reversal of 818852742101 is 101247258818.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 780934527025 + 37918215076 = 883705^2 + 194726^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-818852742101 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (818852742107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 409426371050 + 409426371051.

It is an arithmetic number, because the mean of its divisors is an integer number (409426371051).

Almost surely, 2^818852742101 is an apocalyptic number.

It is an amenable number.

818852742101 is a deficient number, since it is larger than the sum of its proper divisors (1).

818852742101 is an equidigital number, since it uses as much as digits as its factorization.

818852742101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 286720, while the sum is 47.

The spelling of 818852742101 in words is "eight hundred eighteen billion, eight hundred fifty-two million, seven hundred forty-two thousand, one hundred one".