18025716127 has 4 divisors (see below), whose sum is σ = 18030287016. Its totient is φ = 18021145240.

The previous prime is 18025716067. The next prime is 18025716161. The reversal of 18025716127 is 72161752081.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18025716127 - 2³¹ = 15878232479 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18025716127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18025716427) 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, 2279524 + ... + 2287417.

It is an arithmetic number, because the mean of its divisors is an integer number (4507571754).

Almost surely, 2^18025716127 is an apocalyptic number.

18025716127 is a deficient number, since it is larger than the sum of its proper divisors (4570889).

18025716127 is an equidigital number, since it uses as much as digits as its factorization.

18025716127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4570888.

The product of its (nonzero) digits is 47040, while the sum is 40.

The spelling of 18025716127 in words is "eighteen billion, twenty-five million, seven hundred sixteen thousand, one hundred twenty-seven".