16905079779 has 32 divisors (see below), whose sum is σ = 27777308160. Its totient is φ = 8928403200.

The previous prime is 16905079753. The next prime is 16905079801. The reversal of 16905079779 is 97797050961.

It is not a de Polignac number, because 16905079779 - 2⁵ = 16905079747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16905079979) by changing a digit.

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, 500332 + ... + 533049.

It is an arithmetic number, because the mean of its divisors is an integer number (868040880).

Almost surely, 2^16905079779 is an apocalyptic number.

16905079779 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

16905079779 is a deficient number, since it is larger than the sum of its proper divisors (10872228381).

16905079779 is a wasteful number, since it uses less digits than its factorization.

16905079779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033451.

The product of its (nonzero) digits is 7501410, while the sum is 60.

The spelling of 16905079779 in words is "sixteen billion, nine hundred five million, seventy-nine thousand, seven hundred seventy-nine".