17987470520 has 16 divisors (see below), whose sum is σ = 40471808760. Its totient is φ = 7194988192.

The previous prime is 17987470489. The next prime is 17987470531. The reversal of 17987470520 is 2507478971.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224843342 + ... + 224843421.

Almost surely, 2^17987470520 is an apocalyptic number.

17987470520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17987470520 is an abundant number, since it is smaller than the sum of its proper divisors (22484338240).

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

17987470520 is a wasteful number, since it uses less digits than its factorization.

17987470520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449686774 (or 449686770 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 50.

The spelling of 17987470520 in words is "seventeen billion, nine hundred eighty-seven million, four hundred seventy thousand, five hundred twenty".