118640541505 has 32 divisors (see below), whose sum is σ = 144586260000. Its totient is φ = 93448857600.

The previous prime is 118640541491. The next prime is 118640541557. The reversal of 118640541505 is 505145046811.

It can be written as a sum of positive squares in 16 ways, for example, as 108799703104 + 9840838401 = 329848^2 + 99201^2 .

It is not a de Polignac number, because 118640541505 - 2²⁵ = 118606987073 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47059645 + ... + 47062165.

It is an arithmetic number, because the mean of its divisors is an integer number (4518320625).

Almost surely, 2^118640541505 is an apocalyptic number.

It is an amenable number.

118640541505 is a deficient number, since it is larger than the sum of its proper divisors (25945718495).

118640541505 is a wasteful number, since it uses less digits than its factorization.

118640541505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3205.

The product of its (nonzero) digits is 96000, while the sum is 40.

The spelling of 118640541505 in words is "one hundred eighteen billion, six hundred forty million, five hundred forty-one thousand, five hundred five".