44440515540 has 144 divisors (see below), whose sum is σ = 139977294912. Its totient is φ = 11835403776.

The previous prime is 44440515517. The next prime is 44440515599. The reversal of 44440515540 is 4551504444.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 44440515495 and 44440515504.

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 47 ways as a sum of consecutive naturals, for example, 4013692 + ... + 4024748.

It is an arithmetic number, because the mean of its divisors is an integer number (972064548).

Almost surely, 2^44440515540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44440515540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69988647456).

44440515540 is an abundant number, since it is smaller than the sum of its proper divisors (95536779372).

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

44440515540 is a wasteful number, since it uses less digits than its factorization.

44440515540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11908 (or 11894 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 36.

The spelling of 44440515540 in words is "forty-four billion, four hundred forty million, five hundred fifteen thousand, five hundred forty".