44444455555540 has 48 divisors (see below), whose sum is σ = 93476518433424. Its totient is φ = 17750534169600.

The previous prime is 44444455555501. The next prime is 44444455555541. The reversal of 44444455555540 is 4555555444444.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 133439706436 + 44311015849104 = 365294^2 + 6656652^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44444455555541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33515520 + ... + 34816360.

It is an arithmetic number, because the mean of its divisors is an integer number (1947427467363).

Almost surely, 2^{44444455555540} is an apocalyptic number.

It is an amenable number.

44444455555540 is an abundant number, since it is smaller than the sum of its proper divisors (49032062877884).

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

44444455555540 is a wasteful number, since it uses less digits than its factorization.

44444455555540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303468 (or 1303466 counting only the distinct ones).

The product of its (nonzero) digits is 256000000, while the sum is 58.

The spelling of 44444455555540 in words is "forty-four trillion, four hundred forty-four billion, four hundred fifty-five million, five hundred fifty-five thousand, five hundred forty".