21250305540326 has 8 divisors (see below), whose sum is σ = 31876149905400. Its totient is φ = 10624922238528.

The previous prime is 21250305540307. The next prime is 21250305540397. The reversal of 21250305540326 is 62304550305212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21250305540326.

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 3 ways as a sum of consecutive naturals, for example, 115150571 + ... + 115334966.

It is an arithmetic number, because the mean of its divisors is an integer number (3984518738175).

Almost surely, 2^{21250305540326} is an apocalyptic number.

21250305540326 is a deficient number, since it is larger than the sum of its proper divisors (10625844365074).

21250305540326 is a wasteful number, since it uses less digits than its factorization.

21250305540326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230531638.

The product of its (nonzero) digits is 216000, while the sum is 38.

Adding to 21250305540326 its reverse (62304550305212), we get a palindrome (83554855845538).

The spelling of 21250305540326 in words is "twenty-one trillion, two hundred fifty billion, three hundred five million, five hundred forty thousand, three hundred twenty-six".