245355305042240 has 28 divisors (see below), whose sum is σ = 584252320132596. Its totient is φ = 98142122016768.

The previous prime is 245355305042227. The next prime is 245355305042249. The reversal of 245355305042240 is 42240503553542.

It can be written as a sum of positive squares in 2 ways, for example, as 170603095726144 + 74752209316096 = 13061512^2 + 8645936^2 .

It is a junction number, because it is equal to n+sod(n) for n = 245355305042191 and 245355305042200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245355305042249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383367663809 + ... + 383367664448.

Almost surely, 2^{245355305042240} is an apocalyptic number.

245355305042240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245355305042240 is an abundant number, since it is smaller than the sum of its proper divisors (338897015090356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245355305042240 is an equidigital number, since it uses as much as digits as its factorization.

245355305042240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766735328274 (or 766735328264 counting only the distinct ones).

The product of its (nonzero) digits is 2880000, while the sum is 44.

Adding to 245355305042240 its reverse (42240503553542), we get a palindrome (287595808595782).

The spelling of 245355305042240 in words is "two hundred forty-five trillion, three hundred fifty-five billion, three hundred five million, forty-two thousand, two hundred forty".