18766066254 has 64 divisors (see below), whose sum is σ = 40868126208. Its totient is φ = 5710204800.

The previous prime is 18766066217. The next prime is 18766066259. The reversal of 18766066254 is 45266066781.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18766066197 and 18766066206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18766066259) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8764024 + ... + 8766164.

It is an arithmetic number, because the mean of its divisors is an integer number (638564472).

Almost surely, 2^18766066254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18766066254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20434063104).

18766066254 is an abundant number, since it is smaller than the sum of its proper divisors (22102059954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18766066254 is a wasteful number, since it uses less digits than its factorization.

18766066254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3353.

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 18766066254 in words is "eighteen billion, seven hundred sixty-six million, sixty-six thousand, two hundred fifty-four".