44540442647540 has 36 divisors (see below), whose sum is σ = 108805938469956. Its totient is φ = 15271008907392.

The previous prime is 44540442647509. The next prime is 44540442647557. The reversal of 44540442647540 is 4574624404544.

It can be written as a sum of positive squares in 2 ways, for example, as 24530584442896 + 20009858204644 = 4952836^2 + 4473238^2 .

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 11 ways as a sum of consecutive naturals, for example, 22724714657 + ... + 22724716616.

It is an arithmetic number, because the mean of its divisors is an integer number (3022387179721).

Almost surely, 2^{44540442647540} is an apocalyptic number.

It is an amenable number.

44540442647540 is an abundant number, since it is smaller than the sum of its proper divisors (64265495822416).

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

44540442647540 is a wasteful number, since it uses less digits than its factorization.

44540442647540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45449431296 (or 45449431287 counting only the distinct ones).

The product of its (nonzero) digits is 34406400, while the sum is 53.

The spelling of 44540442647540 in words is "forty-four trillion, five hundred forty billion, four hundred forty-two million, six hundred forty-seven thousand, five hundred forty".