17819474712 has 128 divisors (see below), whose sum is σ = 49171147200. Its totient is φ = 5347510272.

The previous prime is 17819474711. The next prime is 17819474719. The reversal of 17819474712 is 21747491871.

It is a happy number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17819474711) 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, 2857614 + ... + 2863842.

Almost surely, 2^17819474712 is an apocalyptic number.

17819474712 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 17819474712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24585573600).

17819474712 is an abundant number, since it is smaller than the sum of its proper divisors (31351672488).

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

17819474712 is a wasteful number, since it uses less digits than its factorization.

17819474712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6477 (or 6473 counting only the distinct ones).

The product of its digits is 790272, while the sum is 51.

The spelling of 17819474712 in words is "seventeen billion, eight hundred nineteen million, four hundred seventy-four thousand, seven hundred twelve".