228173265709 has 2 divisors, whose sum is σ = 228173265710. Its totient is φ = 228173265708.

The previous prime is 228173265659. The next prime is 228173265713. The reversal of 228173265709 is 907562371822.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173178325609 + 54994940100 = 416147^2 + 234510^2 .

It is a cyclic number.

It is not a de Polignac number, because 228173265709 - 2⁹ = 228173265197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228173265739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114086632854 + 114086632855.

It is an arithmetic number, because the mean of its divisors is an integer number (114086632855).

Almost surely, 2^228173265709 is an apocalyptic number.

It is an amenable number.

228173265709 is a deficient number, since it is larger than the sum of its proper divisors (1).

228173265709 is an equidigital number, since it uses as much as digits as its factorization.

228173265709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 228173265709 in words is "two hundred twenty-eight billion, one hundred seventy-three million, two hundred sixty-five thousand, seven hundred nine".