117213235611 has 4 divisors (see below), whose sum is σ = 156284314152. Its totient is φ = 78142157072.

The previous prime is 117213235609. The next prime is 117213235661. The reversal of 117213235611 is 116532312711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 117213235611 - 2¹ = 117213235609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (117213235661) 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, 19535539266 + ... + 19535539271.

It is an arithmetic number, because the mean of its divisors is an integer number (39071078538).

Almost surely, 2^117213235611 is an apocalyptic number.

117213235611 is a deficient number, since it is larger than the sum of its proper divisors (39071078541).

117213235611 is an equidigital number, since it uses as much as digits as its factorization.

117213235611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39071078540.

The product of its digits is 7560, while the sum is 33.

The spelling of 117213235611 in words is "one hundred seventeen billion, two hundred thirteen million, two hundred thirty-five thousand, six hundred eleven".