17478971412 has 24 divisors (see below), whose sum is σ = 46610590656. Its totient is φ = 4993991808.

The previous prime is 17478971399. The next prime is 17478971449. The reversal of 17478971412 is 21417987471.

It is a happy number.

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, 104041413 + ... + 104041580.

It is an arithmetic number, because the mean of its divisors is an integer number (1942107944).

Almost surely, 2^17478971412 is an apocalyptic number.

17478971412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

17478971412 is an abundant number, since it is smaller than the sum of its proper divisors (29131619244).

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

17478971412 is a wasteful number, since it uses less digits than its factorization.

17478971412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208083007 (or 208083005 counting only the distinct ones).

The product of its digits is 790272, while the sum is 51.

The spelling of 17478971412 in words is "seventeen billion, four hundred seventy-eight million, nine hundred seventy-one thousand, four hundred twelve".