18081025137 has 48 divisors (see below), whose sum is σ = 30771686400. Its totient is φ = 10225329408.

The previous prime is 18081025129. The next prime is 18081025147. The reversal of 18081025137 is 73152018081.

It is not a de Polignac number, because 18081025137 - 2³ = 18081025129 is a prime.

It is a super-3 number, since 3×18081025137³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (18081025117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 269248 + ... + 329630.

It is an arithmetic number, because the mean of its divisors is an integer number (641076800).

Almost surely, 2^18081025137 is an apocalyptic number.

It is an amenable number.

18081025137 is a deficient number, since it is larger than the sum of its proper divisors (12690661263).

18081025137 is an equidigital number, since it uses as much as digits as its factorization.

18081025137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60507 (or 60490 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The spelling of 18081025137 in words is "eighteen billion, eighty-one million, twenty-five thousand, one hundred thirty-seven".