117043646538 has 32 divisors (see below), whose sum is σ = 288107438976. Its totient is φ = 30868653888.

The previous prime is 117043646527. The next prime is 117043646719. The reversal of 117043646538 is 835646340711.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107182281 + ... + 107183372.

It is an arithmetic number, because the mean of its divisors is an integer number (9003357468).

Almost surely, 2^117043646538 is an apocalyptic number.

117043646538 is an abundant number, since it is smaller than the sum of its proper divisors (171063792438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117043646538 is a wasteful number, since it uses less digits than its factorization.

117043646538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214365678.

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 117043646538 in words is "one hundred seventeen billion, forty-three million, six hundred forty-six thousand, five hundred thirty-eight".