21313034450773 has 64 divisors (see below), whose sum is σ = 25390284433920. Its totient is φ = 17705087557632.

The previous prime is 21313034450767. The next prime is 21313034450803. The reversal of 21313034450773 is 37705443031312.

It is not a de Polignac number, because 21313034450773 - 2⁴¹ = 19114011195221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21313034450713) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2666458465 + ... + 2666466457.

It is an arithmetic number, because the mean of its divisors is an integer number (396723194280).

Almost surely, 2^{21313034450773} is an apocalyptic number.

It is an amenable number.

21313034450773 is a deficient number, since it is larger than the sum of its proper divisors (4077249983147).

21313034450773 is a wasteful number, since it uses less digits than its factorization.

21313034450773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13646.

The product of its (nonzero) digits is 635040, while the sum is 43.

The spelling of 21313034450773 in words is "twenty-one trillion, three hundred thirteen billion, thirty-four million, four hundred fifty thousand, seven hundred seventy-three".