118644148866512 has 80 divisors (see below), whose sum is σ = 235799116737360. Its totient is φ = 57810790195200.

The previous prime is 118644148866499. The next prime is 118644148866517. The reversal of 118644148866512 is 215668841446811.

It can be written as a sum of positive squares in 8 ways, for example, as 59567462256016 + 59076686610496 = 7717996^2 + 7686136^2 .

It is a super-2 number, since 2×118644148866512² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118644148866517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3273736712 + ... + 3273772952.

It is an arithmetic number, because the mean of its divisors is an integer number (2947488959217).

Almost surely, 2^{118644148866512} is an apocalyptic number.

It is an amenable number.

118644148866512 is a deficient number, since it is larger than the sum of its proper divisors (117154967870848).

118644148866512 is a wasteful number, since it uses less digits than its factorization.

118644148866512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67192 (or 67186 counting only the distinct ones).

The product of its digits is 70778880, while the sum is 65.

The spelling of 118644148866512 in words is "one hundred eighteen trillion, six hundred forty-four billion, one hundred forty-eight million, eight hundred sixty-six thousand, five hundred twelve".