16978094574 has 64 divisors (see below), whose sum is σ = 40141862400. Its totient is φ = 4784391360.

The previous prime is 16978094563. The next prime is 16978094593. The reversal of 16978094574 is 47549087961.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93729 + ... + 206739.

It is an arithmetic number, because the mean of its divisors is an integer number (627216600).

Almost surely, 2^16978094574 is an apocalyptic number.

16978094574 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16978094574, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20070931200).

16978094574 is an abundant number, since it is smaller than the sum of its proper divisors (23163767826).

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

16978094574 is a wasteful number, since it uses less digits than its factorization.

16978094574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113110 (or 113096 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 60.

The spelling of 16978094574 in words is "sixteen billion, nine hundred seventy-eight million, ninety-four thousand, five hundred seventy-four".