18045298656 has 576 divisors, whose sum is σ = 66187570176. Its totient is φ = 4528742400.

The previous prime is 18045298651. The next prime is 18045298693. The reversal of 18045298656 is 65689254081.

18045298656 is a `hidden beast` number, since 180 + 452 + 9 + 8 + 6 + 5 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18045298651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 114938130 + ... + 114938286.

It is an arithmetic number, because the mean of its divisors is an integer number (114908976).

Almost surely, 2^18045298656 is an apocalyptic number.

18045298656 is a gapful number since it is divisible by the number (16) 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 18045298656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33093785088).

18045298656 is an abundant number, since it is smaller than the sum of its proper divisors (48142271520).

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

18045298656 is a wasteful number, since it uses less digits than its factorization.

18045298656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335 (or 324 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 54.

The spelling of 18045298656 in words is "eighteen billion, forty-five million, two hundred ninety-eight thousand, six hundred fifty-six".