118480821209 has 4 divisors (see below), whose sum is σ = 121683005604. Its totient is φ = 115278636816.

The previous prime is 118480821157. The next prime is 118480821223. The reversal of 118480821209 is 902128084811.

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 59181265984 + 59299555225 = 243272^2 + 243515^2 .

It is a cyclic number.

It is not a de Polignac number, because 118480821209 - 2²⁴ = 118464043993 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 118480821209.

It is not an unprimeable number, because it can be changed into a prime (118480821299) 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, 1601092142 + ... + 1601092215.

It is an arithmetic number, because the mean of its divisors is an integer number (30420751401).

Almost surely, 2^118480821209 is an apocalyptic number.

It is an amenable number.

118480821209 is a deficient number, since it is larger than the sum of its proper divisors (3202184395).

118480821209 is an equidigital number, since it uses as much as digits as its factorization.

118480821209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3202184394.

The product of its (nonzero) digits is 73728, while the sum is 44.

The spelling of 118480821209 in words is "one hundred eighteen billion, four hundred eighty million, eight hundred twenty-one thousand, two hundred nine".