117531690538 has 8 divisors (see below), whose sum is σ = 176299049088. Its totient is φ = 58765340844.

The previous prime is 117531690511. The next prime is 117531690583. The reversal of 117531690538 is 835096135711.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 117531690491 and 117531690500.

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, 204295 + ... + 526117.

It is an arithmetic number, because the mean of its divisors is an integer number (22037381136).

Almost surely, 2^117531690538 is an apocalyptic number.

117531690538 is a deficient number, since it is larger than the sum of its proper divisors (58767358550).

117531690538 is a wasteful number, since it uses less digits than its factorization.

117531690538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504428.

The product of its (nonzero) digits is 680400, while the sum is 49.

The spelling of 117531690538 in words is "one hundred seventeen billion, five hundred thirty-one million, six hundred ninety thousand, five hundred thirty-eight".