118640566406 has 8 divisors (see below), whose sum is σ = 184097430720. Its totient is φ = 57274756168.

The previous prime is 118640566393. The next prime is 118640566411. The reversal of 118640566406 is 604665046811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1022763446 + ... + 1022763561.

It is an arithmetic number, because the mean of its divisors is an integer number (23012178840).

Almost surely, 2^118640566406 is an apocalyptic number.

118640566406 is a deficient number, since it is larger than the sum of its proper divisors (65456864314).

118640566406 is a wasteful number, since it uses less digits than its factorization.

118640566406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045527038.

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 118640566406 in words is "one hundred eighteen billion, six hundred forty million, five hundred sixty-six thousand, four hundred six".