18020525059 has 4 divisors (see below), whose sum is σ = 18047788240. Its totient is φ = 17993261880.

The previous prime is 18020525057. The next prime is 18020525077. The reversal of 18020525059 is 95052502081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95052502081 = 569 ⋅167051849.

It is a cyclic number.

It is not a de Polignac number, because 18020525059 - 2¹ = 18020525057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18020525057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13630599 + ... + 13631920.

It is an arithmetic number, because the mean of its divisors is an integer number (4511947060).

Almost surely, 2^18020525059 is an apocalyptic number.

18020525059 is a deficient number, since it is larger than the sum of its proper divisors (27263181).

18020525059 is an equidigital number, since it uses as much as digits as its factorization.

18020525059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27263180.

The product of its (nonzero) digits is 36000, while the sum is 37.

The spelling of 18020525059 in words is "eighteen billion, twenty million, five hundred twenty-five thousand, fifty-nine".