117540789666 has 48 divisors (see below), whose sum is σ = 253200989664. Its totient is φ = 36250423168.

The previous prime is 117540789661. The next prime is 117540789673. The reversal of 117540789666 is 666987045711.

It is not an unprimeable number, because it can be changed into a prime (117540789661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 189541 + ... + 520583.

It is an arithmetic number, because the mean of its divisors is an integer number (5275020618).

Almost surely, 2^117540789666 is an apocalyptic number.

117540789666 is an abundant number, since it is smaller than the sum of its proper divisors (135660199998).

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

117540789666 is a wasteful number, since it uses less digits than its factorization.

117540789666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331183 (or 331124 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 60.

The spelling of 117540789666 in words is "one hundred seventeen billion, five hundred forty million, seven hundred eighty-nine thousand, six hundred sixty-six".