18782666127 has 20 divisors (see below), whose sum is σ = 28710575080. Its totient is φ = 12230571024.

The previous prime is 18782666083. The next prime is 18782666191. The reversal of 18782666127 is 72166628781.

It is not a de Polignac number, because 18782666127 - 2²² = 18778471823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18782666627) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2692852 + ... + 2699817.

It is an arithmetic number, because the mean of its divisors is an integer number (1435528754).

Almost surely, 2^18782666127 is an apocalyptic number.

18782666127 is a deficient number, since it is larger than the sum of its proper divisors (9927908953).

18782666127 is an equidigital number, since it uses as much as digits as its factorization.

18782666127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5392724 (or 5392715 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The spelling of 18782666127 in words is "eighteen billion, seven hundred eighty-two million, six hundred sixty-six thousand, one hundred twenty-seven".