21043741634374 has 32 divisors (see below), whose sum is σ = 32468689886976. Its totient is φ = 10221727518720.

The previous prime is 21043741634329. The next prime is 21043741634387. The reversal of 21043741634374 is 47343614734012.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 263115339 + ... + 263195305.

It is an arithmetic number, because the mean of its divisors is an integer number (1014646558968).

Almost surely, 2^{21043741634374} is an apocalyptic number.

21043741634374 is a deficient number, since it is larger than the sum of its proper divisors (11424948252602).

21043741634374 is a wasteful number, since it uses less digits than its factorization.

21043741634374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85440.

The product of its (nonzero) digits is 4064256, while the sum is 49.

The spelling of 21043741634374 in words is "twenty-one trillion, forty-three billion, seven hundred forty-one million, six hundred thirty-four thousand, three hundred seventy-four".