117318217643 has 16 divisors (see below), whose sum is σ = 131577506784. Its totient is φ = 103663848960.

The previous prime is 117318217631. The next prime is 117318217657. The reversal of 117318217643 is 346712813711.

It is a cyclic number.

It is not a de Polignac number, because 117318217643 - 2³⁴ = 100138348459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 117318217594 and 117318217603.

It is not an unprimeable number, because it can be changed into a prime (117318217543) 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 15 ways as a sum of consecutive naturals, for example, 250121 + ... + 545157.

It is an arithmetic number, because the mean of its divisors is an integer number (8223594174).

Almost surely, 2^117318217643 is an apocalyptic number.

117318217643 is a deficient number, since it is larger than the sum of its proper divisors (14259289141).

117318217643 is a wasteful number, since it uses less digits than its factorization.

117318217643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296062.

The product of its digits is 169344, while the sum is 44.

The spelling of 117318217643 in words is "one hundred seventeen billion, three hundred eighteen million, two hundred seventeen thousand, six hundred forty-three".