17996736618852 has 96 divisors (see below), whose sum is σ = 44650804262400. Its totient is φ = 5630920791552.

The previous prime is 17996736618769. The next prime is 17996736618853. The reversal of 17996736618852 is 25881663769971.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (17996736618853) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15255973 + ... + 16393235.

It is an arithmetic number, because the mean of its divisors is an integer number (465112544400).

Almost surely, 2^{17996736618852} is an apocalyptic number.

17996736618852 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 17996736618852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22325402131200).

17996736618852 is an abundant number, since it is smaller than the sum of its proper divisors (26654067643548).

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

17996736618852 is a wasteful number, since it uses less digits than its factorization.

17996736618852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138565 (or 1138563 counting only the distinct ones).

The product of its digits is 1646023680, while the sum is 78.

The spelling of 17996736618852 in words is "seventeen trillion, nine hundred ninety-six billion, seven hundred thirty-six million, six hundred eighteen thousand, eight hundred fifty-two".