244406660640 has 48 divisors (see below), whose sum is σ = 769880982528. Its totient is φ = 65175109376.

The previous prime is 244406660609. The next prime is 244406660653. The reversal of 244406660640 is 46066604442.

244406660640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×244406660640² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 244406660592 and 244406660601.

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, 254589792 + ... + 254590751.

It is an arithmetic number, because the mean of its divisors is an integer number (16039187136).

Almost surely, 2^244406660640 is an apocalyptic number.

244406660640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

244406660640 is an abundant number, since it is smaller than the sum of its proper divisors (525474321888).

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

244406660640 is a wasteful number, since it uses less digits than its factorization.

244406660640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509180561 (or 509180553 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 42.

The spelling of 244406660640 in words is "two hundred forty-four billion, four hundred six million, six hundred sixty thousand, six hundred forty".