245202132440 has 128 divisors (see below), whose sum is σ = 585697512960. Its totient is φ = 92192753664.

The previous prime is 245202132421. The next prime is 245202132529. The reversal of 245202132440 is 44231202542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26685527 + ... + 26694713.

It is an arithmetic number, because the mean of its divisors is an integer number (4575761820).

Almost surely, 2^245202132440 is an apocalyptic number.

245202132440 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 245202132440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292848756480).

245202132440 is an abundant number, since it is smaller than the sum of its proper divisors (340495380520).

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

245202132440 is a wasteful number, since it uses less digits than its factorization.

245202132440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9721 (or 9717 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 245202132440 its reverse (44231202542), we get a palindrome (289433334982).

The spelling of 245202132440 in words is "two hundred forty-five billion, two hundred two million, one hundred thirty-two thousand, four hundred forty".