117216454128 has 20 divisors (see below), whose sum is σ = 302809173288. Its totient is φ = 39072151360.

The previous prime is 117216454127. The next prime is 117216454207. The reversal of 117216454128 is 821454612711.

It is a self number, because there is not a number n which added to its sum of digits gives 117216454128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117216454127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1221004683 + ... + 1221004778.

Almost surely, 2^117216454128 is an apocalyptic number.

It is an amenable number.

117216454128 is an abundant number, since it is smaller than the sum of its proper divisors (185592719160).

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

117216454128 is a wasteful number, since it uses less digits than its factorization.

117216454128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2442009472 (or 2442009466 counting only the distinct ones).

The product of its digits is 107520, while the sum is 42.

The spelling of 117216454128 in words is "one hundred seventeen billion, two hundred sixteen million, four hundred fifty-four thousand, one hundred twenty-eight".