118423660589 has 4 divisors (see below), whose sum is σ = 127533172956. Its totient is φ = 109314148224.

The previous prime is 118423660547. The next prime is 118423660609. The reversal of 118423660589 is 985066324811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 985066324811 = 233 ⋅4227752467.

It can be written as a sum of positive squares in 2 ways, for example, as 67490844100 + 50932816489 = 259790^2 + 225683^2 .

It is a cyclic number.

It is not a de Polignac number, because 118423660589 - 2¹² = 118423656493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 118423660589.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118423660519) 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, 4554756164 + ... + 4554756189.

It is an arithmetic number, because the mean of its divisors is an integer number (31883293239).

Almost surely, 2^118423660589 is an apocalyptic number.

It is an amenable number.

118423660589 is a deficient number, since it is larger than the sum of its proper divisors (9109512367).

118423660589 is an equidigital number, since it uses as much as digits as its factorization.

118423660589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9109512366.

The product of its (nonzero) digits is 2488320, while the sum is 53.

The spelling of 118423660589 in words is "one hundred eighteen billion, four hundred twenty-three million, six hundred sixty thousand, five hundred eighty-nine".