17420788520 has 32 divisors (see below), whose sum is σ = 40461189120. Its totient is φ = 6743530560.

The previous prime is 17420788417. The next prime is 17420788591. The reversal of 17420788520 is 2588702471.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7023272 + ... + 7025751.

It is an arithmetic number, because the mean of its divisors is an integer number (1264412160).

Almost surely, 2^17420788520 is an apocalyptic number.

17420788520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17420788520 is an abundant number, since it is smaller than the sum of its proper divisors (23040400600).

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

17420788520 is a wasteful number, since it uses less digits than its factorization.

17420788520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14049065 (or 14049061 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 44.

The spelling of 17420788520 in words is "seventeen billion, four hundred twenty million, seven hundred eighty-eight thousand, five hundred twenty".