227680792921 has 2 divisors, whose sum is σ = 227680792922. Its totient is φ = 227680792920.

The previous prime is 227680792877. The next prime is 227680792949. The reversal of 227680792921 is 129297086722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200278625625 + 27402167296 = 447525^2 + 165536^2 .

It is a cyclic number.

It is not a de Polignac number, because 227680792921 - 2¹¹ = 227680790873 is a prime.

It is not a weakly prime, because it can be changed into another prime (227680792961) 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 as a sum of consecutive naturals, namely, 113840396460 + 113840396461.

It is an arithmetic number, because the mean of its divisors is an integer number (113840396461).

Almost surely, 2^227680792921 is an apocalyptic number.

It is an amenable number.

227680792921 is a deficient number, since it is larger than the sum of its proper divisors (1).

227680792921 is an equidigital number, since it uses as much as digits as its factorization.

227680792921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3048192, while the sum is 55.

The spelling of 227680792921 in words is "two hundred twenty-seven billion, six hundred eighty million, seven hundred ninety-two thousand, nine hundred twenty-one".