17878847460 has 96 divisors (see below), whose sum is σ = 51019651200. Its totient is φ = 4676797440.

The previous prime is 17878847443. The next prime is 17878847479. The reversal of 17878847460 is 6474887871.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 17878847394 and 17878847403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1380696 + ... + 1393584.

It is an arithmetic number, because the mean of its divisors is an integer number (531454700).

Almost surely, 2^17878847460 is an apocalyptic number.

17878847460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 17878847460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25509825600).

17878847460 is an abundant number, since it is smaller than the sum of its proper divisors (33140803740).

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

17878847460 is a wasteful number, since it uses less digits than its factorization.

17878847460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13341 (or 13339 counting only the distinct ones).

The product of its (nonzero) digits is 16859136, while the sum is 60.

The spelling of 17878847460 in words is "seventeen billion, eight hundred seventy-eight million, eight hundred forty-seven thousand, four hundred sixty".