118215077 has 2 divisors, whose sum is σ = 118215078. Its totient is φ = 118215076.

The previous prime is 118215061. The next prime is 118215089. The reversal of 118215077 is 770512811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71893441 + 46321636 = 8479^2 + 6806^2 .

It is a cyclic number.

It is not a de Polignac number, because 118215077 - 2⁴ = 118215061 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118215277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59107538 + 59107539.

It is an arithmetic number, because the mean of its divisors is an integer number (59107539).

Almost surely, 2^118215077 is an apocalyptic number.

It is an amenable number.

118215077 is a deficient number, since it is larger than the sum of its proper divisors (1).

118215077 is an equidigital number, since it uses as much as digits as its factorization.

118215077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3920, while the sum is 32.

The square root of 118215077 is about 10872.6757056393. The cubic root of 118215077 is about 490.7846335025.

Adding to 118215077 its reverse (770512811), we get a palindrome (888727888).

The spelling of 118215077 in words is "one hundred eighteen million, two hundred fifteen thousand, seventy-seven".