118782355691 has 2 divisors, whose sum is σ = 118782355692. Its totient is φ = 118782355690.

The previous prime is 118782355639. The next prime is 118782355693. The reversal of 118782355691 is 196553287811.

It is a strong prime.

It is an emirp because it is prime and its reverse (196553287811) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118782355691 is a prime.

It is a Sophie Germain prime.

Together with 118782355693, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (118782355693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59391177845 + 59391177846.

It is an arithmetic number, because the mean of its divisors is an integer number (59391177846).

Almost surely, 2^118782355691 is an apocalyptic number.

118782355691 is a deficient number, since it is larger than the sum of its proper divisors (1).

118782355691 is an equidigital number, since it uses as much as digits as its factorization.

118782355691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3628800, while the sum is 56.

The spelling of 118782355691 in words is "one hundred eighteen billion, seven hundred eighty-two million, three hundred fifty-five thousand, six hundred ninety-one".