245305423053240 has 256 divisors, whose sum is σ = 808169984133120. Its totient is φ = 59072430243840.

The previous prime is 245305423053233. The next prime is 245305423053247. The reversal of 245305423053240 is 42350324503542.

It is an interprime number because it is at equal distance from previous prime (245305423053233) and next prime (245305423053247).

It is a junction number, because it is equal to n+sod(n) for n = 245305423053192 and 245305423053201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245305423053247) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 171761377 + ... + 173183663.

It is an arithmetic number, because the mean of its divisors is an integer number (3156914000520).

Almost surely, 2^{245305423053240} is an apocalyptic number.

245305423053240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245305423053240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (404084992066560).

245305423053240 is an abundant number, since it is smaller than the sum of its proper divisors (562864561079880).

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

245305423053240 is a wasteful number, since it uses less digits than its factorization.

245305423053240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423182 (or 1423178 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 42.

Adding to 245305423053240 its reverse (42350324503542), we get a palindrome (287655747556782).

The spelling of 245305423053240 in words is "two hundred forty-five trillion, three hundred five billion, four hundred twenty-three million, fifty-three thousand, two hundred forty".