18055388576 has 12 divisors (see below), whose sum is σ = 35546546322. Its totient is φ = 9027694272.

The previous prime is 18055388573. The next prime is 18055388587. The reversal of 18055388576 is 67588355081.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13858940176 + 4196448400 = 117724^2 + 64780^2 .

It is not an unprimeable number, because it can be changed into a prime (18055388573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282115415 + ... + 282115478.

Almost surely, 2^18055388576 is an apocalyptic number.

18055388576 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18055388576 is a deficient number, since it is larger than the sum of its proper divisors (17491157746).

18055388576 is an equidigital number, since it uses as much as digits as its factorization.

18055388576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564230903 (or 564230895 counting only the distinct ones).

The product of its (nonzero) digits is 8064000, while the sum is 56.

The spelling of 18055388576 in words is "eighteen billion, fifty-five million, three hundred eighty-eight thousand, five hundred seventy-six".