118518263657 has 2 divisors, whose sum is σ = 118518263658. Its totient is φ = 118518263656.

The previous prime is 118518263653. The next prime is 118518263659. The reversal of 118518263657 is 756362815811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97716259216 + 20802004441 = 312596^2 + 144229^2 .

It is a cyclic number.

It is not a de Polignac number, because 118518263657 - 2² = 118518263653 is a prime.

Together with 118518263659, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 118518263599 and 118518263608.

It is not a weakly prime, because it can be changed into another prime (118518263653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59259131828 + 59259131829.

It is an arithmetic number, because the mean of its divisors is an integer number (59259131829).

Almost surely, 2^118518263657 is an apocalyptic number.

It is an amenable number.

118518263657 is a deficient number, since it is larger than the sum of its proper divisors (1).

118518263657 is an equidigital number, since it uses as much as digits as its factorization.

118518263657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2419200, while the sum is 53.

The spelling of 118518263657 in words is "one hundred eighteen billion, five hundred eighteen million, two hundred sixty-three thousand, six hundred fifty-seven".