118563638212 has 12 divisors (see below), whose sum is σ = 207517941036. Its totient is φ = 59272797920.

The previous prime is 118563638201. The next prime is 118563638351. The reversal of 118563638212 is 212836365811.

It can be written as a sum of positive squares in 2 ways, for example, as 8468416576 + 110095221636 = 92024^2 + 331806^2 .

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, 2225683 + ... + 2278330.

It is an arithmetic number, because the mean of its divisors is an integer number (17293161753).

Almost surely, 2^118563638212 is an apocalyptic number.

It is an amenable number.

118563638212 is a deficient number, since it is larger than the sum of its proper divisors (88954302824).

118563638212 is a wasteful number, since it uses less digits than its factorization.

118563638212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4510598 (or 4510596 counting only the distinct ones).

The product of its digits is 414720, while the sum is 46.

The spelling of 118563638212 in words is "one hundred eighteen billion, five hundred sixty-three million, six hundred thirty-eight thousand, two hundred twelve".