17985471485 has 8 divisors (see below), whose sum is σ = 21586227000. Its totient is φ = 14385936384.

The previous prime is 17985471479. The next prime is 17985471503. The reversal of 17985471485 is 58417458971.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6416089 + 17979055396 = 2533^2 + 134086^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 17985471485 - 2²⁰ = 17984422909 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272360 + ... + 331889.

It is an arithmetic number, because the mean of its divisors is an integer number (2698278375).

Almost surely, 2^17985471485 is an apocalyptic number.

It is an amenable number.

17985471485 is a deficient number, since it is larger than the sum of its proper divisors (3600755515).

17985471485 is an equidigital number, since it uses as much as digits as its factorization.

17985471485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610207.

The product of its digits is 11289600, while the sum is 59.

The spelling of 17985471485 in words is "seventeen billion, nine hundred eighty-five million, four hundred seventy-one thousand, four hundred eighty-five".