21843064348646 has 16 divisors (see below), whose sum is σ = 32793784237584. Its totient is φ = 10911803519904.

The previous prime is 21843064348631. The next prime is 21843064348673. The reversal of 21843064348646 is 64684346034812.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85965380 + ... + 86219096.

It is an arithmetic number, because the mean of its divisors is an integer number (2049611514849).

Almost surely, 2^{21843064348646} is an apocalyptic number.

21843064348646 is a deficient number, since it is larger than the sum of its proper divisors (10950719888938).

21843064348646 is a wasteful number, since it uses less digits than its factorization.

21843064348646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291895.

The product of its (nonzero) digits is 63700992, while the sum is 59.

The spelling of 21843064348646 in words is "twenty-one trillion, eight hundred forty-three billion, sixty-four million, three hundred forty-eight thousand, six hundred forty-six".