226640661441 has 4 divisors (see below), whose sum is σ = 302187548592. Its totient is φ = 151093774292.

The previous prime is 226640661439. The next prime is 226640661463. The reversal of 226640661441 is 144166046622.

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 226640661441 - 2¹ = 226640661439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 226640661393 and 226640661402.

It is not an unprimeable number, because it can be changed into a prime (226640661941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37773443571 + ... + 37773443576.

It is an arithmetic number, because the mean of its divisors is an integer number (75546887148).

Almost surely, 2^226640661441 is an apocalyptic number.

It is an amenable number.

226640661441 is a deficient number, since it is larger than the sum of its proper divisors (75546887151).

226640661441 is an equidigital number, since it uses as much as digits as its factorization.

226640661441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75546887150.

The product of its (nonzero) digits is 331776, while the sum is 42.

The spelling of 226640661441 in words is "two hundred twenty-six billion, six hundred forty million, six hundred sixty-one thousand, four hundred forty-one".