16999905792779 has 16 divisors (see below), whose sum is σ = 20923182920640. Its totient is φ = 13450332234240.

The previous prime is 16999905792763. The next prime is 16999905792781. The reversal of 16999905792779 is 97729750999961.

16999905792779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 16999905792779 - 2⁴ = 16999905792763 is a prime.

It is a super-4 number, since 4×16999905792779⁴ (a number of 54 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 16999905792694 and 16999905792703.

It is not an unprimeable number, because it can be changed into a prime (16999905792739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8089727 + ... + 9972135.

It is an arithmetic number, because the mean of its divisors is an integer number (1307698932540).

Almost surely, 2^{16999905792779} is an apocalyptic number.

16999905792779 is a deficient number, since it is larger than the sum of its proper divisors (3923277127861).

16999905792779 is a wasteful number, since it uses less digits than its factorization.

16999905792779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981670.

The product of its (nonzero) digits is 10937055780, while the sum is 89.

The spelling of 16999905792779 in words is "sixteen trillion, nine hundred ninety-nine billion, nine hundred five million, seven hundred ninety-two thousand, seven hundred seventy-nine".