266226336213521 has 8 divisors (see below), whose sum is σ = 266649130562688. Its totient is φ = 265803565120000.

The previous prime is 266226336213479. The next prime is 266226336213569. The reversal of 266226336213521 is 125312633622662.

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

It is a cyclic number.

It is not a de Polignac number, because 266226336213521 - 2⁴⁶ = 195857592035857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 266226336213521.

It is not an unprimeable number, because it can be changed into a prime (266226336213571) 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, 17171996 + ... + 28763346.

It is an arithmetic number, because the mean of its divisors is an integer number (33331141320336).

Almost surely, 2^{266226336213521} is an apocalyptic number.

It is an amenable number.

266226336213521 is a deficient number, since it is larger than the sum of its proper divisors (422794349167).

266226336213521 is a wasteful number, since it uses less digits than its factorization.

266226336213521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11627823.

The product of its digits is 5598720, while the sum is 50.

The spelling of 266226336213521 in words is "two hundred sixty-six trillion, two hundred twenty-six billion, three hundred thirty-six million, two hundred thirteen thousand, five hundred twenty-one".