118021161771 has 12 divisors (see below), whose sum is σ = 170843214048. Its totient is φ = 78510834864.

The previous prime is 118021161751. The next prime is 118021161787. The reversal of 118021161771 is 177161120811.

It is a happy number.

118021161771 is a `hidden beast` number, since 1 + 18 + 0 + 21 + 1 + 617 + 7 + 1 = 666.

It is not a de Polignac number, because 118021161771 - 2⁹ = 118021161259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118021161701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14157240 + ... + 14165573.

It is an arithmetic number, because the mean of its divisors is an integer number (14236934504).

Almost surely, 2^118021161771 is an apocalyptic number.

118021161771 is a deficient number, since it is larger than the sum of its proper divisors (52822052277).

118021161771 is a wasteful number, since it uses less digits than its factorization.

118021161771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28323282 (or 28323279 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 36.

The spelling of 118021161771 in words is "one hundred eighteen billion, twenty-one million, one hundred sixty-one thousand, seven hundred seventy-one".