226561690461 has 4 divisors (see below), whose sum is σ = 302082253952. Its totient is φ = 151041126972.

The previous prime is 226561690429. The next prime is 226561690469. The reversal of 226561690461 is 164096165622.

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 not a de Polignac number, because 226561690461 - 2⁵ = 226561690429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 226561690461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226561690469) 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, 37760281741 + ... + 37760281746.

It is an arithmetic number, because the mean of its divisors is an integer number (75520563488).

Almost surely, 2^226561690461 is an apocalyptic number.

It is an amenable number.

226561690461 is a deficient number, since it is larger than the sum of its proper divisors (75520563491).

226561690461 is an equidigital number, since it uses as much as digits as its factorization.

226561690461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75520563490.

The product of its (nonzero) digits is 933120, while the sum is 48.

The spelling of 226561690461 in words is "two hundred twenty-six billion, five hundred sixty-one million, six hundred ninety thousand, four hundred sixty-one".