245323320499109 has 2 divisors, whose sum is σ = 245323320499110. Its totient is φ = 245323320499108.

The previous prime is 245323320499087. The next prime is 245323320499123. The reversal of 245323320499109 is 901994023323542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150044052067009 + 95279268432100 = 12249247^2 + 9761110^2 .

It is a cyclic number.

It is not a de Polignac number, because 245323320499109 - 2¹² = 245323320495013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245323320469109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122661660249554 + 122661660249555.

It is an arithmetic number, because the mean of its divisors is an integer number (122661660249555).

Almost surely, 2^{245323320499109} is an apocalyptic number.

It is an amenable number.

245323320499109 is a deficient number, since it is larger than the sum of its proper divisors (1).

245323320499109 is an equidigital number, since it uses as much as digits as its factorization.

245323320499109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12597120, while the sum is 56.

The spelling of 245323320499109 in words is "two hundred forty-five trillion, three hundred twenty-three billion, three hundred twenty million, four hundred ninety-nine thousand, one hundred nine".