21118675486846 has 64 divisors (see below), whose sum is σ = 39370958226432. Its totient is φ = 8287834747392.

The previous prime is 21118675486813. The next prime is 21118675486849. The reversal of 21118675486846 is 64868457681112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21118675486849) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 245001471 + ... + 245087653.

It is an arithmetic number, because the mean of its divisors is an integer number (615171222288).

Almost surely, 2^{21118675486846} is an apocalyptic number.

21118675486846 is a deficient number, since it is larger than the sum of its proper divisors (18252282739586).

21118675486846 is a wasteful number, since it uses less digits than its factorization.

21118675486846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114073.

The product of its digits is 123863040, while the sum is 67.

The spelling of 21118675486846 in words is "twenty-one trillion, one hundred eighteen billion, six hundred seventy-five million, four hundred eighty-six thousand, eight hundred forty-six".