18585315705 has 32 divisors (see below), whose sum is σ = 34348053888. Its totient is φ = 8480998400.

The previous prime is 18585315689. The next prime is 18585315713. The reversal of 18585315705 is 50751358581.

It is not a de Polignac number, because 18585315705 - 2⁴ = 18585315689 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3310086 + ... + 3315695.

It is an arithmetic number, because the mean of its divisors is an integer number (1073376684).

Almost surely, 2^18585315705 is an apocalyptic number.

18585315705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18585315705 is a deficient number, since it is larger than the sum of its proper divisors (15762738183).

18585315705 is a wasteful number, since it uses less digits than its factorization.

18585315705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6625817.

The product of its (nonzero) digits is 840000, while the sum is 48.

The spelling of 18585315705 in words is "eighteen billion, five hundred eighty-five million, three hundred fifteen thousand, seven hundred five".