18039411125 has 8 divisors (see below), whose sum is σ = 22513185240. Its totient is φ = 14431528800.

The previous prime is 18039411121. The next prime is 18039411139. The reversal of 18039411125 is 52111493081.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2997124516 + 15042286609 = 54746^2 + 122647^2 .

It is not a de Polignac number, because 18039411125 - 2² = 18039411121 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18039411121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72157520 + ... + 72157769.

It is an arithmetic number, because the mean of its divisors is an integer number (2814148155).

Almost surely, 2^18039411125 is an apocalyptic number.

It is an amenable number.

18039411125 is a deficient number, since it is larger than the sum of its proper divisors (4473774115).

18039411125 is an equidigital number, since it uses as much as digits as its factorization.

18039411125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144315304 (or 144315294 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 35.

The spelling of 18039411125 in words is "eighteen billion, thirty-nine million, four hundred eleven thousand, one hundred twenty-five".