245734447707840 has 1792 divisors, whose sum is σ = 1016481090207744. Its totient is φ = 48879452160000.

The previous prime is 245734447707839. The next prime is 245734447707869. The reversal of 245734447707840 is 48707744437542.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 81884186340 + ... + 81884189340.

It is an arithmetic number, because the mean of its divisors is an integer number (567232751232).

Almost surely, 2^{245734447707840} is an apocalyptic number.

245734447707840 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 245734447707840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (508240545103872).

245734447707840 is an abundant number, since it is smaller than the sum of its proper divisors (770746642499904).

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

245734447707840 is a wasteful number, since it uses less digits than its factorization.

245734447707840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3638 (or 3628 counting only the distinct ones).

The product of its (nonzero) digits is 590069760, while the sum is 66.

The spelling of 245734447707840 in words is "two hundred forty-five trillion, seven hundred thirty-four billion, four hundred forty-seven million, seven hundred seven thousand, eight hundred forty".