16681833485 has 8 divisors (see below), whose sum is σ = 20195353080. Its totient is φ = 13227364864.

The previous prime is 16681833439. The next prime is 16681833499. The reversal of 16681833485 is 58433818661.

It can be written as a sum of positive squares in 4 ways, for example, as 301161316 + 16380672169 = 17354^2 + 127987^2 .

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 16681833485 - 2⁸ = 16681833229 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14762120 + ... + 14763249.

It is an arithmetic number, because the mean of its divisors is an integer number (2524419135).

Almost surely, 2^16681833485 is an apocalyptic number.

It is an amenable number.

16681833485 is a deficient number, since it is larger than the sum of its proper divisors (3513519595).

16681833485 is a wasteful number, since it uses less digits than its factorization.

16681833485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29525487.

The product of its digits is 3317760, while the sum is 53.

The spelling of 16681833485 in words is "sixteen billion, six hundred eighty-one million, eight hundred thirty-three thousand, four hundred eighty-five".