21266042403362 has 8 divisors (see below), whose sum is σ = 33775479111276. Its totient is φ = 10007549366272.

The previous prime is 21266042403317. The next prime is 21266042403433. The reversal of 21266042403362 is 26330424066212.

It can be written as a sum of positive squares in 2 ways, for example, as 20482766072521 + 783276330841 = 4525789^2 + 885029^2 .

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

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, 312735917663 + ... + 312735917730.

Almost surely, 2^{21266042403362} is an apocalyptic number.

21266042403362 is a deficient number, since it is larger than the sum of its proper divisors (12509436707914).

21266042403362 is a wasteful number, since it uses less digits than its factorization.

21266042403362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625471835412.

The product of its (nonzero) digits is 497664, while the sum is 41.

Adding to 21266042403362 its reverse (26330424066212), we get a palindrome (47596466469574).

The spelling of 21266042403362 in words is "twenty-one trillion, two hundred sixty-six billion, forty-two million, four hundred three thousand, three hundred sixty-two".