118305947213 has 2 divisors, whose sum is σ = 118305947214. Its totient is φ = 118305947212.

The previous prime is 118305947203. The next prime is 118305947303. The reversal of 118305947213 is 312749503811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109059778564 + 9246168649 = 330242^2 + 96157^2 .

It is an emirp because it is prime and its reverse (312749503811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118305947213 - 2¹⁰ = 118305946189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118305947203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59152973606 + 59152973607.

It is an arithmetic number, because the mean of its divisors is an integer number (59152973607).

Almost surely, 2^118305947213 is an apocalyptic number.

It is an amenable number.

118305947213 is a deficient number, since it is larger than the sum of its proper divisors (1).

118305947213 is an equidigital number, since it uses as much as digits as its factorization.

118305947213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 118305947213 in words is "one hundred eighteen billion, three hundred five million, nine hundred forty-seven thousand, two hundred thirteen".