16670421212643 has 12 divisors (see below), whose sum is σ = 26268542517048. Its totient is φ = 10103285583360.

The previous prime is 16670421212623. The next prime is 16670421212681. The reversal of 16670421212643 is 34621212407661.

16670421212643 is a `hidden beast` number, since 1 + 6 + 6 + 7 + 0 + 421 + 212 + 6 + 4 + 3 = 666.

It is not a de Polignac number, because 16670421212643 - 2⁸ = 16670421212387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16670421212623) 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 11 ways as a sum of consecutive naturals, for example, 84194046430 + ... + 84194046627.

It is an arithmetic number, because the mean of its divisors is an integer number (2189045209754).

Almost surely, 2^{16670421212643} is an apocalyptic number.

16670421212643 is a deficient number, since it is larger than the sum of its proper divisors (9598121304405).

16670421212643 is a wasteful number, since it uses less digits than its factorization.

16670421212643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168388093074 (or 168388093071 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 16670421212643 in words is "sixteen trillion, six hundred seventy billion, four hundred twenty-one million, two hundred twelve thousand, six hundred forty-three".