44486557618 has 12 divisors (see below), whose sum is σ = 67483878570. Its totient is φ = 21991963136.

The previous prime is 44486557613. The next prime is 44486557651. The reversal of 44486557618 is 81675568444.

It can be written as a sum of positive squares in 3 ways, for example, as 7340548329 + 37146009289 = 85677^2 + 192733^2 .

It is not an unprimeable number, because it can be changed into a prime (44486557613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2806098 + ... + 2821906.

Almost surely, 2^44486557618 is an apocalyptic number.

44486557618 is a deficient number, since it is larger than the sum of its proper divisors (22997320952).

44486557618 is an frugal number, since it uses more digits than its factorization.

44486557618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31709 (or 15900 counting only the distinct ones).

The product of its digits is 25804800, while the sum is 58.

The spelling of 44486557618 in words is "forty-four billion, four hundred eighty-six million, five hundred fifty-seven thousand, six hundred eighteen".