28331813417 has 2 divisors, whose sum is σ = 28331813418. Its totient is φ = 28331813416.

The previous prime is 28331813381. The next prime is 28331813423. The reversal of 28331813417 is 71431813382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26522076736 + 1809736681 = 162856^2 + 42541^2 .

It is a cyclic number.

It is not a de Polignac number, because 28331813417 - 2¹⁴ = 28331797033 is a prime.

It is not a weakly prime, because it can be changed into another prime (28331813467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14165906708 + 14165906709.

It is an arithmetic number, because the mean of its divisors is an integer number (14165906709).

Almost surely, 2^28331813417 is an apocalyptic number.

It is an amenable number.

28331813417 is a deficient number, since it is larger than the sum of its proper divisors (1).

28331813417 is an equidigital number, since it uses as much as digits as its factorization.

28331813417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 41.

The spelling of 28331813417 in words is "twenty-eight billion, three hundred thirty-one million, eight hundred thirteen thousand, four hundred seventeen".