226742718561 has 4 divisors (see below), whose sum is σ = 302323624752. Its totient is φ = 151161812372.

The previous prime is 226742718479. The next prime is 226742718577. The reversal of 226742718561 is 165817247622.

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 226742718561 - 2¹¹ = 226742716513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (226742718581) 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, 37790453091 + ... + 37790453096.

It is an arithmetic number, because the mean of its divisors is an integer number (75580906188).

Almost surely, 2^226742718561 is an apocalyptic number.

It is an amenable number.

226742718561 is a deficient number, since it is larger than the sum of its proper divisors (75580906191).

226742718561 is an equidigital number, since it uses as much as digits as its factorization.

226742718561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75580906190.

The product of its digits is 2257920, while the sum is 51.

The spelling of 226742718561 in words is "two hundred twenty-six billion, seven hundred forty-two million, seven hundred eighteen thousand, five hundred sixty-one".