118513585997 has 2 divisors, whose sum is σ = 118513585998. Its totient is φ = 118513585996.

The previous prime is 118513585969. The next prime is 118513586017. The reversal of 118513585997 is 799585315811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112453586281 + 6059999716 = 335341^2 + 77846^2 .

It is an emirp because it is prime and its reverse (799585315811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118513585997 - 2³⁰ = 117439844173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118513585397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59256792998 + 59256792999.

It is an arithmetic number, because the mean of its divisors is an integer number (59256792999).

Almost surely, 2^118513585997 is an apocalyptic number.

It is an amenable number.

118513585997 is a deficient number, since it is larger than the sum of its proper divisors (1).

118513585997 is an equidigital number, since it uses as much as digits as its factorization.

118513585997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608000, while the sum is 62.

The spelling of 118513585997 in words is "one hundred eighteen billion, five hundred thirteen million, five hundred eighty-five thousand, nine hundred ninety-seven".