245215341400440 has 64 divisors (see below), whose sum is σ = 759376541122560. Its totient is φ = 63281378424960.

The previous prime is 245215341400423. The next prime is 245215341400441. The reversal of 245215341400440 is 44004143512542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245215341400441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32959047544 + ... + 32959054983.

It is an arithmetic number, because the mean of its divisors is an integer number (11865258455040).

Almost surely, 2^{245215341400440} is an apocalyptic number.

245215341400440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245215341400440 is an abundant number, since it is smaller than the sum of its proper divisors (514161199722120).

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

245215341400440 is a wasteful number, since it uses less digits than its factorization.

245215341400440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65918102572 (or 65918102568 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 39.

Adding to 245215341400440 its reverse (44004143512542), we get a palindrome (289219484912982).

The spelling of 245215341400440 in words is "two hundred forty-five trillion, two hundred fifteen billion, three hundred forty-one million, four hundred thousand, four hundred forty".