18523980004608 has 1440 divisors, whose sum is σ = 67162118284800. Its totient is φ = 5015879811072.

The previous prime is 18523980004571. The next prime is 18523980004639. The reversal of 18523980004608 is 80640008932581.

18523980004608 is a `hidden beast` number, since 1 + 8 + 5 + 23 + 9 + 8 + 0 + 0 + 0 + 4 + 608 = 666.

It is a super-2 number, since 2×18523980004608² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 6878565310 + ... + 6878568002.

It is an arithmetic number, because the mean of its divisors is an integer number (46640359920).

Almost surely, 2^{18523980004608} is an apocalyptic number.

18523980004608 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 18523980004608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33581059142400).

18523980004608 is an abundant number, since it is smaller than the sum of its proper divisors (48638138280192).

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

18523980004608 is a wasteful number, since it uses less digits than its factorization.

18523980004608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2849 (or 2826 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 18523980004608 in words is "eighteen trillion, five hundred twenty-three billion, nine hundred eighty million, four thousand, six hundred eight".