245404444440 has 32 divisors (see below), whose sum is σ = 736213333680. Its totient is φ = 65441185152.

The previous prime is 245404444433. The next prime is 245404444451. The reversal of 245404444440 is 44444404542.

245404444440 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1022518399 + ... + 1022518638.

Almost surely, 2^245404444440 is an apocalyptic number.

245404444440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245404444440 is an abundant number, since it is smaller than the sum of its proper divisors (490808889240).

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

245404444440 is a wasteful number, since it uses less digits than its factorization.

245404444440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045037051 (or 2045037047 counting only the distinct ones).

The product of its (nonzero) digits is 655360, while the sum is 39.

Adding to 245404444440 its reverse (44444404542), we get a palindrome (289848848982).

The spelling of 245404444440 in words is "two hundred forty-five billion, four hundred four million, four hundred forty-four thousand, four hundred forty".