318623543089 has 4 divisors (see below), whose sum is σ = 326394849060. Its totient is φ = 310852237120.

The previous prime is 318623543057. The next prime is 318623543093. The reversal of 318623543089 is 980345326813.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 980345326813 = 211 ⋅4646186383.

It can be written as a sum of positive squares in 2 ways, for example, as 60567671025 + 258055872064 = 246105^2 + 507992^2 .

It is a cyclic number.

It is not a de Polignac number, because 318623543089 - 2⁵ = 318623543057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (318623543789) 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, 3885652924 + ... + 3885653005.

It is an arithmetic number, because the mean of its divisors is an integer number (81598712265).

Almost surely, 2^318623543089 is an apocalyptic number.

It is an amenable number.

318623543089 is a deficient number, since it is larger than the sum of its proper divisors (7771305971).

318623543089 is an equidigital number, since it uses as much as digits as its factorization.

318623543089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7771305970.

The product of its (nonzero) digits is 3732480, while the sum is 52.

The spelling of 318623543089 in words is "three hundred eighteen billion, six hundred twenty-three million, five hundred forty-three thousand, eighty-nine".