21226536662255 has 16 divisors (see below), whose sum is σ = 26293713696000. Its totient is φ = 16433324417280.

The previous prime is 21226536662213. The next prime is 21226536662269. The reversal of 21226536662255 is 55226663562212.

It is not a de Polignac number, because 21226536662255 - 2⁴⁴ = 3634350617839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21226536662197 and 21226536662206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23953931 + ... + 24824259.

It is an arithmetic number, because the mean of its divisors is an integer number (1643357106000).

Almost surely, 2^{21226536662255} is an apocalyptic number.

21226536662255 is a deficient number, since it is larger than the sum of its proper divisors (5067177033745).

21226536662255 is a wasteful number, since it uses less digits than its factorization.

21226536662255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027714.

The product of its digits is 15552000, while the sum is 53.

The spelling of 21226536662255 in words is "twenty-one trillion, two hundred twenty-six billion, five hundred thirty-six million, six hundred sixty-two thousand, two hundred fifty-five".