18032131005 has 64 divisors (see below), whose sum is σ = 33770981376. Its totient is φ = 8045856000.

The previous prime is 18032130997. The next prime is 18032131037. The reversal of 18032131005 is 50013123081.

It is not a de Polignac number, because 18032131005 - 2³ = 18032130997 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 828310 + ... + 849800.

It is an arithmetic number, because the mean of its divisors is an integer number (527671584).

Almost surely, 2^18032131005 is an apocalyptic number.

18032131005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18032131005 is a deficient number, since it is larger than the sum of its proper divisors (15738850371).

18032131005 is a wasteful number, since it uses less digits than its factorization.

18032131005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21698.

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 18032131005 its reverse (50013123081), we get a palindrome (68045254086).

The spelling of 18032131005 in words is "eighteen billion, thirty-two million, one hundred thirty-one thousand, five".