16666853537 has 12 divisors (see below), whose sum is σ = 17419898160. Its totient is φ = 15941466576.

The previous prime is 16666853503. The next prime is 16666853549. The reversal of 16666853537 is 73535866661.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-16666853537 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16666853597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22403 + ... + 183944.

It is an arithmetic number, because the mean of its divisors is an integer number (1451658180).

Almost surely, 2^16666853537 is an apocalyptic number.

It is an amenable number.

16666853537 is a deficient number, since it is larger than the sum of its proper divisors (753044623).

16666853537 is an equidigital number, since it uses as much as digits as its factorization.

16666853537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206480 (or 206443 counting only the distinct ones).

The product of its digits is 16329600, while the sum is 56.

The spelling of 16666853537 in words is "sixteen billion, six hundred sixty-six million, eight hundred fifty-three thousand, five hundred thirty-seven".