44400561635440 has 40 divisors (see below), whose sum is σ = 104178382022880. Its totient is φ = 17597286809856.

The previous prime is 44400561635363. The next prime is 44400561635467. The reversal of 44400561635440 is 4453616500444.

It is a tau number, because it is divible by the number of its divisors (40).

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, 2545895044 + ... + 2545912483.

It is an arithmetic number, because the mean of its divisors is an integer number (2604459550572).

Almost surely, 2^{44400561635440} is an apocalyptic number.

44400561635440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44400561635440 is an abundant number, since it is smaller than the sum of its proper divisors (59777820387440).

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

44400561635440 is a wasteful number, since it uses less digits than its factorization.

44400561635440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5091807649 (or 5091807643 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 46.

The spelling of 44400561635440 in words is "forty-four trillion, four hundred billion, five hundred sixty-one million, six hundred thirty-five thousand, four hundred forty".