21941064326 has 16 divisors (see below), whose sum is σ = 33237734400. Its totient is φ = 10861862088.

The previous prime is 21941064323. The next prime is 21941064377. The reversal of 21941064326 is 62346014912.

It is a self number, because there is not a number n which added to its sum of digits gives 21941064326.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21941064323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1686635 + ... + 1699593.

It is an arithmetic number, because the mean of its divisors is an integer number (2077358400).

Almost surely, 2^21941064326 is an apocalyptic number.

21941064326 is a deficient number, since it is larger than the sum of its proper divisors (11296670074).

21941064326 is a wasteful number, since it uses less digits than its factorization.

21941064326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21283.

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 21941064326 in words is "twenty-one billion, nine hundred forty-one million, sixty-four thousand, three hundred twenty-six".