245222736440 has 64 divisors (see below), whose sum is σ = 601965509760. Its totient is φ = 89163733120.

The previous prime is 245222736439. The next prime is 245222736463. The reversal of 245222736440 is 44637222542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6935687 + ... + 6970953.

It is an arithmetic number, because the mean of its divisors is an integer number (9405711090).

Almost surely, 2^245222736440 is an apocalyptic number.

245222736440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245222736440 is an abundant number, since it is smaller than the sum of its proper divisors (356742773320).

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

245222736440 is a wasteful number, since it uses less digits than its factorization.

245222736440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51092 (or 51088 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 41.

Adding to 245222736440 its reverse (44637222542), we get a palindrome (289859958982).

The spelling of 245222736440 in words is "two hundred forty-five billion, two hundred twenty-two million, seven hundred thirty-six thousand, four hundred forty".