118644197536 has 24 divisors (see below), whose sum is σ = 233590217364. Its totient is φ = 59319697920.

The previous prime is 118644197489. The next prime is 118644197543. The reversal of 118644197536 is 635791446811.

It can be written as a sum of positive squares in 2 ways, for example, as 113609443600 + 5034753936 = 337060^2 + 70956^2 .

It is a super-2 number, since 2×118644197536² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 938746 + ... + 1057606.

Almost surely, 2^118644197536 is an apocalyptic number.

118644197536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

118644197536 is a deficient number, since it is larger than the sum of its proper divisors (114946019828).

118644197536 is a wasteful number, since it uses less digits than its factorization.

118644197536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150064 (or 150056 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 55.

The spelling of 118644197536 in words is "one hundred eighteen billion, six hundred forty-four million, one hundred ninety-seven thousand, five hundred thirty-six".