18195516922752 has 1728 divisors, whose sum is σ = 65316156796800. Its totient is φ = 5016345624576.

The previous prime is 18195516922747. The next prime is 18195516922753. The reversal of 18195516922752 is 25722961559181.

18195516922752 is a `hidden beast` number, since 1 + 8 + 1 + 9 + 5 + 516 + 92 + 27 + 5 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (1728).

It is a self number, because there is not a number n which added to its sum of digits gives 18195516922752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18195516922753) by changing a digit.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 204444010324 + ... + 204444010412.

It is an arithmetic number, because the mean of its divisors is an integer number (37798701850).

Almost surely, 2^{18195516922752} is an apocalyptic number.

18195516922752 is a gapful number since it is divisible by the number (12) 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 18195516922752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32658078398400).

18195516922752 is an abundant number, since it is smaller than the sum of its proper divisors (47120639874048).

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

18195516922752 is an equidigital number, since it uses as much as digits as its factorization.

18195516922752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275 (or 149 counting only the distinct ones).

The product of its digits is 27216000, while the sum is 63.

The spelling of 18195516922752 in words is "eighteen trillion, one hundred ninety-five billion, five hundred sixteen million, nine hundred twenty-two thousand, seven hundred fifty-two".