45444549618 has 24 divisors (see below), whose sum is σ = 106037282988. Its totient is φ = 13982938272.

The previous prime is 45444549611. The next prime is 45444549659. The reversal of 45444549618 is 81694544454.

45444549618 is a `hidden beast` number, since 4 + 54 + 44 + 549 + 6 + 1 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 44794452609 + 650097009 = 211647^2 + 25497^2 .

It is not an unprimeable number, because it can be changed into a prime (45444549611) by changing a digit.

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, 97103505 + ... + 97103972.

Almost surely, 2^45444549618 is an apocalyptic number.

45444549618 is an abundant number, since it is smaller than the sum of its proper divisors (60592733370).

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

45444549618 is a wasteful number, since it uses less digits than its factorization.

45444549618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194207498 (or 194207495 counting only the distinct ones).

The product of its digits is 11059200, while the sum is 54.

The spelling of 45444549618 in words is "forty-five billion, four hundred forty-four million, five hundred forty-nine thousand, six hundred eighteen".