117873956247 has 4 divisors (see below), whose sum is σ = 157165275000. Its totient is φ = 78582637496.

The previous prime is 117873956243. The next prime is 117873956267. The reversal of 117873956247 is 742659378711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 117873956247 - 2² = 117873956243 is a prime.

It is a super-2 number, since 2×117873956247² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117873956243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19645659372 + ... + 19645659377.

It is an arithmetic number, because the mean of its divisors is an integer number (39291318750).

Almost surely, 2^117873956247 is an apocalyptic number.

117873956247 is a deficient number, since it is larger than the sum of its proper divisors (39291318753).

117873956247 is an equidigital number, since it uses as much as digits as its factorization.

117873956247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39291318752.

The product of its digits is 17781120, while the sum is 60.

The spelling of 117873956247 in words is "one hundred seventeen billion, eight hundred seventy-three million, nine hundred fifty-six thousand, two hundred forty-seven".