117111142661 has 4 divisors (see below), whose sum is σ = 117114141900. Its totient is φ = 117108143424.

The previous prime is 117111142657. The next prime is 117111142693. The reversal of 117111142661 is 166241111711.

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

It can be written as a sum of positive squares in 2 ways, for example, as 77587317025 + 39523825636 = 278545^2 + 198806^2 .

It is a cyclic number.

It is not a de Polignac number, because 117111142661 - 2² = 117111142657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117111042661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1440266 + ... + 1519403.

It is an arithmetic number, because the mean of its divisors is an integer number (29278535475).

Almost surely, 2^117111142661 is an apocalyptic number.

It is an amenable number.

117111142661 is a deficient number, since it is larger than the sum of its proper divisors (2999239).

117111142661 is an equidigital number, since it uses as much as digits as its factorization.

117111142661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2999238.

The product of its digits is 2016, while the sum is 32.

The spelling of 117111142661 in words is "one hundred seventeen billion, one hundred eleven million, one hundred forty-two thousand, six hundred sixty-one".