226531663777 has 4 divisors (see below), whose sum is σ = 229076963460. Its totient is φ = 223986364096.

The previous prime is 226531663753. The next prime is 226531663783. The reversal of 226531663777 is 777366135622.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 148551659776 + 77980004001 = 385424^2 + 279249^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-226531663777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (226531663727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1272649708 + ... + 1272649885.

It is an arithmetic number, because the mean of its divisors is an integer number (57269240865).

Almost surely, 2^226531663777 is an apocalyptic number.

It is an amenable number.

226531663777 is a deficient number, since it is larger than the sum of its proper divisors (2545299683).

226531663777 is an equidigital number, since it uses as much as digits as its factorization.

226531663777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545299682.

The product of its digits is 13335840, while the sum is 55.

The spelling of 226531663777 in words is "two hundred twenty-six billion, five hundred thirty-one million, six hundred sixty-three thousand, seven hundred seventy-seven".