16799851979 has 8 divisors (see below), whose sum is σ = 18361888128. Its totient is φ = 15301572480.

The previous prime is 16799851969. The next prime is 16799851987. The reversal of 16799851979 is 97915899761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16799851979 - 2⁴ = 16799851963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16799851919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15938612 + ... + 15939665.

It is an arithmetic number, because the mean of its divisors is an integer number (2295236016).

Almost surely, 2^16799851979 is an apocalyptic number.

16799851979 is a deficient number, since it is larger than the sum of its proper divisors (1562036149).

16799851979 is a wasteful number, since it uses less digits than its factorization.

16799851979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31878325.

The product of its digits is 77157360, while the sum is 71.

The spelling of 16799851979 in words is "sixteen billion, seven hundred ninety-nine million, eight hundred fifty-one thousand, nine hundred seventy-nine".