18039325377 has 4 divisors (see below), whose sum is σ = 24052433840. Its totient is φ = 12026216916.

The previous prime is 18039325333. The next prime is 18039325391. The reversal of 18039325377 is 77352393081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77352393081 = 3 ⋅25784131027.

It is not a de Polignac number, because 18039325377 - 2⁸ = 18039325121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18039325397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3006554227 + ... + 3006554232.

It is an arithmetic number, because the mean of its divisors is an integer number (6013108460).

Almost surely, 2^18039325377 is an apocalyptic number.

It is an amenable number.

18039325377 is a deficient number, since it is larger than the sum of its proper divisors (6013108463).

18039325377 is an equidigital number, since it uses as much as digits as its factorization.

18039325377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6013108462.

The product of its (nonzero) digits is 952560, while the sum is 48.

The spelling of 18039325377 in words is "eighteen billion, thirty-nine million, three hundred twenty-five thousand, three hundred seventy-seven".