118523977665 has 16 divisors (see below), whose sum is σ = 189644021376. Its totient is φ = 63210902400.

The previous prime is 118523977633. The next prime is 118523977667. The reversal of 118523977665 is 566779325811.

It is not a de Polignac number, because 118523977665 - 2⁵ = 118523977633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 118523977599 and 118523977608.

It is not an unprimeable number, because it can be changed into a prime (118523977667) 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 15 ways as a sum of consecutive naturals, for example, 509445 + ... + 704685.

It is an arithmetic number, because the mean of its divisors is an integer number (11852751336).

Almost surely, 2^118523977665 is an apocalyptic number.

118523977665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

118523977665 is a deficient number, since it is larger than the sum of its proper divisors (71120043711).

118523977665 is a wasteful number, since it uses less digits than its factorization.

118523977665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235720.

The product of its digits is 19051200, while the sum is 60.

The spelling of 118523977665 in words is "one hundred eighteen billion, five hundred twenty-three million, nine hundred seventy-seven thousand, six hundred sixty-five".