16669782861 has 16 divisors (see below), whose sum is σ = 22948182528. Its totient is φ = 10752436800.

The previous prime is 16669782823. The next prime is 16669782947. The reversal of 16669782861 is 16828796661.

It is not a de Polignac number, because 16669782861 - 2²¹ = 16667685709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16669782795 and 16669782804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16669782461) 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, 502975 + ... + 535091.

It is an arithmetic number, because the mean of its divisors is an integer number (1434261408).

Almost surely, 2^16669782861 is an apocalyptic number.

It is an amenable number.

16669782861 is a deficient number, since it is larger than the sum of its proper divisors (6278399667).

16669782861 is a wasteful number, since it uses less digits than its factorization.

16669782861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37732.

The product of its digits is 10450944, while the sum is 60.

The spelling of 16669782861 in words is "sixteen billion, six hundred sixty-nine million, seven hundred eighty-two thousand, eight hundred sixty-one".