118278462681 has 32 divisors (see below), whose sum is σ = 176010549120. Its totient is φ = 78500601792.

The previous prime is 118278462641. The next prime is 118278462683. The reversal of 118278462681 is 186264872811.

118278462681 is a `hidden beast` number, since 1 + 1 + 8 + 2 + 7 + 8 + 4 + 626 + 8 + 1 = 666.

It is not a de Polignac number, because 118278462681 - 2¹⁹ = 118277938393 is a prime.

It is a super-2 number, since 2×118278462681² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (118278462683) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6108291 + ... + 6127623.

It is an arithmetic number, because the mean of its divisors is an integer number (5500329660).

Almost surely, 2^118278462681 is an apocalyptic number.

It is an amenable number.

118278462681 is a deficient number, since it is larger than the sum of its proper divisors (57732086439).

118278462681 is a wasteful number, since it uses less digits than its factorization.

118278462681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20342 (or 20336 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 54.

The spelling of 118278462681 in words is "one hundred eighteen billion, two hundred seventy-eight million, four hundred sixty-two thousand, six hundred eighty-one".