18054255780 has 192 divisors, whose sum is σ = 61632748800. Its totient is φ = 4351242240.

The previous prime is 18054255749. The next prime is 18054255781. The reversal of 18054255780 is 8755245081.

18054255780 is a `hidden beast` number, since 1 + 8 + 0 + 54 + 25 + 578 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (18054255781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1018836 + ... + 1036404.

It is an arithmetic number, because the mean of its divisors is an integer number (321003900).

Almost surely, 2^18054255780 is an apocalyptic number.

18054255780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18054255780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30816374400).

18054255780 is an abundant number, since it is smaller than the sum of its proper divisors (43578493020).

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

18054255780 is a wasteful number, since it uses less digits than its factorization.

18054255780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17771 (or 17763 counting only the distinct ones).

The product of its (nonzero) digits is 448000, while the sum is 45.

The spelling of 18054255780 in words is "eighteen billion, fifty-four million, two hundred fifty-five thousand, seven hundred eighty".