18373078660608 has 720 divisors, whose sum is σ = 65165075529840. Its totient is φ = 4955140915200.

The previous prime is 18373078660591. The next prime is 18373078660639. The reversal of 18373078660608 is 80606687037381.

18373078660608 is a `hidden beast` number, since 18 + 3 + 7 + 3 + 0 + 7 + 8 + 6 + 6 + 0 + 608 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1205495868 + ... + 1205511108.

It is an arithmetic number, because the mean of its divisors is an integer number (90507049347).

Almost surely, 2^{18373078660608} is an apocalyptic number.

18373078660608 is a gapful number since it is divisible by the number (18) 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 18373078660608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32582537764920).

18373078660608 is an abundant number, since it is smaller than the sum of its proper divisors (46791996869232).

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

18373078660608 is a wasteful number, since it uses less digits than its factorization.

18373078660608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15579 (or 15553 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 63.

The spelling of 18373078660608 in words is "eighteen trillion, three hundred seventy-three billion, seventy-eight million, six hundred sixty thousand, six hundred eight".