226513571136561 has 12 divisors (see below), whose sum is σ = 327194285488720. Its totient is φ = 151005347700120.

The previous prime is 226513571136551. The next prime is 226513571136581. The reversal of 226513571136561 is 165631175315622.

It is a happy number.

226513571136561 is a `hidden beast` number, since 2 + 2 + 6 + 5 + 1 + 3 + 5 + 71 + 1 + 3 + 6 + 561 = 666.

It is not a de Polignac number, because 226513571136561 - 2²¹ = 226513569039409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 226513571136498 and 226513571136507.

It is not an unprimeable number, because it can be changed into a prime (226513571136551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 307922575 + ... + 308657316.

Almost surely, 2^{226513571136561} is an apocalyptic number.

It is an amenable number.

226513571136561 is a deficient number, since it is larger than the sum of its proper divisors (100680714352159).

226513571136561 is a wasteful number, since it uses less digits than its factorization.

226513571136561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616620716 (or 616620713 counting only the distinct ones).

The product of its digits is 6804000, while the sum is 54.

The spelling of 226513571136561 in words is "two hundred twenty-six trillion, five hundred thirteen billion, five hundred seventy-one million, one hundred thirty-six thousand, five hundred sixty-one".