17818000312 has 64 divisors (see below), whose sum is σ = 39240368640. Its totient is φ = 7424784000.

The previous prime is 17818000307. The next prime is 17818000313. The reversal of 17818000312 is 21300081871.

It is a happy number.

It is a super-2 number, since 2×17818000312² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17818000313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5283987 + ... + 5287357.

It is an arithmetic number, because the mean of its divisors is an integer number (613130760).

Almost surely, 2^17818000312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 17818000312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19620184320).

17818000312 is an abundant number, since it is smaller than the sum of its proper divisors (21422368328).

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

17818000312 is a wasteful number, since it uses less digits than its factorization.

17818000312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5972 (or 5968 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 31.

The spelling of 17818000312 in words is "seventeen billion, eight hundred eighteen million, three hundred twelve", and thus it is an aban number.