117021065205 has 64 divisors (see below), whose sum is σ = 213273907200. Its totient is φ = 54268811520.

The previous prime is 117021065197. The next prime is 117021065233. The reversal of 117021065205 is 502560120711.

It is not a de Polignac number, because 117021065205 - 2³ = 117021065197 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 397716 + ... + 626274.

It is an arithmetic number, because the mean of its divisors is an integer number (3332404800).

Almost surely, 2^117021065205 is an apocalyptic number.

117021065205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

117021065205 is a deficient number, since it is larger than the sum of its proper divisors (96252841995).

117021065205 is a wasteful number, since it uses less digits than its factorization.

117021065205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228714.

The product of its (nonzero) digits is 4200, while the sum is 30.

Adding to 117021065205 its reverse (502560120711), we get a palindrome (619581185916).

The spelling of 117021065205 in words is "one hundred seventeen billion, twenty-one million, sixty-five thousand, two hundred five".