117866458738156 has 48 divisors (see below), whose sum is σ = 218242357724160. Its totient is φ = 55543543715520.

The previous prime is 117866458738129. The next prime is 117866458738159. The reversal of 117866458738156 is 651837854668711.

It is a Harshad number since it is a multiple of its sum of digits (76).

It is not an unprimeable number, because it can be changed into a prime (117866458738159) 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, 187000071 + ... + 187629313.

It is an arithmetic number, because the mean of its divisors is an integer number (4546715785920).

Almost surely, 2^{117866458738156} is an apocalyptic number.

It is an amenable number.

117866458738156 is a deficient number, since it is larger than the sum of its proper divisors (100375898986004).

117866458738156 is a wasteful number, since it uses less digits than its factorization.

117866458738156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641974 (or 641972 counting only the distinct ones).

The product of its digits is 1625702400, while the sum is 76.

The spelling of 117866458738156 in words is "one hundred seventeen trillion, eight hundred sixty-six billion, four hundred fifty-eight million, seven hundred thirty-eight thousand, one hundred fifty-six".