17208980478 has 48 divisors (see below), whose sum is σ = 37501553232. Its totient is φ = 5703264000.

The previous prime is 17208980407. The next prime is 17208980479. The reversal of 17208980478 is 87408980271.

It is a happy number.

17208980478 is a `hidden beast` number, since 17 + 2 + 0 + 89 + 80 + 478 = 666.

It is a super-2 number, since 2×17208980478² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17208980479) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2994688 + ... + 3000428.

It is an arithmetic number, because the mean of its divisors is an integer number (781282359).

Almost surely, 2^17208980478 is an apocalyptic number.

17208980478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

17208980478 is an abundant number, since it is smaller than the sum of its proper divisors (20292572754).

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

17208980478 is a wasteful number, since it uses less digits than its factorization.

17208980478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6681 (or 6678 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 54.

The spelling of 17208980478 in words is "seventeen billion, two hundred eight million, nine hundred eighty thousand, four hundred seventy-eight".