18466554120 has 128 divisors (see below), whose sum is σ = 63353283840. Its totient is φ = 4218301440.

The previous prime is 18466554077. The next prime is 18466554131. The reversal of 18466554120 is 2145566481.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1557334 + ... + 1569146.

It is an arithmetic number, because the mean of its divisors is an integer number (494947530).

Almost surely, 2^18466554120 is an apocalyptic number.

18466554120 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 18466554120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31676641920).

18466554120 is an abundant number, since it is smaller than the sum of its proper divisors (44886729720).

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

18466554120 is a wasteful number, since it uses less digits than its factorization.

18466554120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13695 (or 13691 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 42.

The spelling of 18466554120 in words is "eighteen billion, four hundred sixty-six million, five hundred fifty-four thousand, one hundred twenty".