16919279805 has 16 divisors (see below), whose sum is σ = 27349930944. Its totient is φ = 8930588160.

The previous prime is 16919279779. The next prime is 16919279813. The reversal of 16919279805 is 50897291961.

It is not a de Polignac number, because 16919279805 - 2⁷ = 16919279677 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5812731 + ... + 5815640.

It is an arithmetic number, because the mean of its divisors is an integer number (1709370684).

Almost surely, 2^16919279805 is an apocalyptic number.

16919279805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16919279805 is a deficient number, since it is larger than the sum of its proper divisors (10430651139).

16919279805 is a wasteful number, since it uses less digits than its factorization.

16919279805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11628476.

The product of its (nonzero) digits is 2449440, while the sum is 57.

The spelling of 16919279805 in words is "sixteen billion, nine hundred nineteen million, two hundred seventy-nine thousand, eight hundred five".