226515522561 has 4 divisors (see below), whose sum is σ = 302020696752. Its totient is φ = 151010348372.

The previous prime is 226515522539. The next prime is 226515522601. The reversal of 226515522561 is 165225515622.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 226515522561 - 2¹⁵ = 226515489793 is a prime.

It is a super-2 number, since 2×226515522561² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (226515522161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37752587091 + ... + 37752587096.

It is an arithmetic number, because the mean of its divisors is an integer number (75505174188).

Almost surely, 2^226515522561 is an apocalyptic number.

It is an amenable number.

226515522561 is a deficient number, since it is larger than the sum of its proper divisors (75505174191).

226515522561 is an equidigital number, since it uses as much as digits as its factorization.

226515522561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75505174190.

The product of its digits is 360000, while the sum is 42.

The spelling of 226515522561 in words is "two hundred twenty-six billion, five hundred fifteen million, five hundred twenty-two thousand, five hundred sixty-one".