118678210821 has 12 divisors (see below), whose sum is σ = 171724307040. Its totient is φ = 78980241960.

The previous prime is 118678210759. The next prime is 118678210843. The reversal of 118678210821 is 128012876811.

It is not a de Polignac number, because 118678210821 - 2²¹ = 118676113669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118678210421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11541681 + ... + 11551958.

It is an arithmetic number, because the mean of its divisors is an integer number (14310358920).

Almost surely, 2^118678210821 is an apocalyptic number.

It is an amenable number.

118678210821 is a deficient number, since it is larger than the sum of its proper divisors (53046096219).

118678210821 is a wasteful number, since it uses less digits than its factorization.

118678210821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23094216 (or 23094213 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 45.

The spelling of 118678210821 in words is "one hundred eighteen billion, six hundred seventy-eight million, two hundred ten thousand, eight hundred twenty-one".