118340729989 has 2 divisors, whose sum is σ = 118340729990. Its totient is φ = 118340729988.

The previous prime is 118340729971. The next prime is 118340729999. The reversal of 118340729989 is 989927043811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89301161889 + 29039568100 = 298833^2 + 170410^2 .

It is an emirp because it is prime and its reverse (989927043811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118340729989 - 2¹¹ = 118340727941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118340729999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59170364994 + 59170364995.

It is an arithmetic number, because the mean of its divisors is an integer number (59170364995).

Almost surely, 2^118340729989 is an apocalyptic number.

It is an amenable number.

118340729989 is a deficient number, since it is larger than the sum of its proper divisors (1).

118340729989 is an equidigital number, since it uses as much as digits as its factorization.

118340729989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7838208, while the sum is 61.

The spelling of 118340729989 in words is "one hundred eighteen billion, three hundred forty million, seven hundred twenty-nine thousand, nine hundred eighty-nine".