18445078705 has 8 divisors (see below), whose sum is σ = 22329972072. Its totient is φ = 14625477888.

The previous prime is 18445078699. The next prime is 18445078721. The reversal of 18445078705 is 50787054481.

It can be written as a sum of positive squares in 4 ways, for example, as 562970529 + 17882108176 = 23727^2 + 133724^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18445078705 - 2³ = 18445078697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16322514 + ... + 16323643.

It is an arithmetic number, because the mean of its divisors is an integer number (2791246509).

Almost surely, 2^18445078705 is an apocalyptic number.

It is an amenable number.

18445078705 is a deficient number, since it is larger than the sum of its proper divisors (3884893367).

18445078705 is a wasteful number, since it uses less digits than its factorization.

18445078705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32646275.

The product of its (nonzero) digits is 1254400, while the sum is 49.

The spelling of 18445078705 in words is "eighteen billion, four hundred forty-five million, seventy-eight thousand, seven hundred five".