18073542585 has 64 divisors (see below), whose sum is σ = 33336299520. Its totient is φ = 8190547200.

The previous prime is 18073542581. The next prime is 18073542601. The reversal of 18073542585 is 58524537081.

It is not a de Polignac number, because 18073542585 - 2² = 18073542581 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18073542581) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10828131 + ... + 10829799.

It is an arithmetic number, because the mean of its divisors is an integer number (520879680).

Almost surely, 2^18073542585 is an apocalyptic number.

18073542585 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18073542585 is a deficient number, since it is larger than the sum of its proper divisors (15262756935).

18073542585 is a wasteful number, since it uses less digits than its factorization.

18073542585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2518.

The product of its (nonzero) digits is 1344000, while the sum is 48.

The spelling of 18073542585 in words is "eighteen billion, seventy-three million, five hundred forty-two thousand, five hundred eighty-five".