118778155187 has 2 divisors, whose sum is σ = 118778155188. Its totient is φ = 118778155186.

The previous prime is 118778155159. The next prime is 118778155261. The reversal of 118778155187 is 781551877811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 118778155187 - 2²⁶ = 118711046323 is a prime.

It is not a weakly prime, because it can be changed into another prime (118778155127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59389077593 + 59389077594.

It is an arithmetic number, because the mean of its divisors is an integer number (59389077594).

Almost surely, 2^118778155187 is an apocalyptic number.

118778155187 is a deficient number, since it is larger than the sum of its proper divisors (1).

118778155187 is an equidigital number, since it uses as much as digits as its factorization.

118778155187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4390400, while the sum is 59.

The spelling of 118778155187 in words is "one hundred eighteen billion, seven hundred seventy-eight million, one hundred fifty-five thousand, one hundred eighty-seven".