17230721216 has 112 divisors (see below), whose sum is σ = 38574024960. Its totient is φ = 7595596800.

The previous prime is 17230721177. The next prime is 17230721237. The reversal of 17230721216 is 61212703271.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1026491 + ... + 1043141.

Almost surely, 2^17230721216 is an apocalyptic number.

17230721216 is a gapful number since it is divisible by the number (16) 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 17230721216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19287012480).

17230721216 is an abundant number, since it is smaller than the sum of its proper divisors (21343303744).

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

17230721216 is a wasteful number, since it uses less digits than its factorization.

17230721216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16742 (or 16732 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The spelling of 17230721216 in words is "seventeen billion, two hundred thirty million, seven hundred twenty-one thousand, two hundred sixteen".