16673947878 has 16 divisors (see below), whose sum is σ = 38111880960. Its totient is φ = 4763985096.

The previous prime is 16673947861. The next prime is 16673947889. The reversal of 16673947878 is 87874937661.

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, 198499338 + ... + 198499421.

It is an arithmetic number, because the mean of its divisors is an integer number (2381992560).

Almost surely, 2^16673947878 is an apocalyptic number.

16673947878 is an abundant number, since it is smaller than the sum of its proper divisors (21437933082).

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

16673947878 is a wasteful number, since it uses less digits than its factorization.

16673947878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396998771.

The product of its digits is 85349376, while the sum is 66.

The spelling of 16673947878 in words is "sixteen billion, six hundred seventy-three million, nine hundred forty-seven thousand, eight hundred seventy-eight".