45550889728 has 18 divisors (see below), whose sum is σ = 90923846804. Its totient is φ = 22775444736.

The previous prime is 45550889723. The next prime is 45550889729. The reversal of 45550889728 is 82798805554.

It is not an unprimeable number, because it can be changed into a prime (45550889723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 88966326 + ... + 88966837.

Almost surely, 2^45550889728 is an apocalyptic number.

It is an amenable number.

45550889728 is a deficient number, since it is larger than the sum of its proper divisors (45372957076).

45550889728 is an equidigital number, since it uses as much as digits as its factorization.

45550889728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177933179 (or 177933165 counting only the distinct ones).

The product of its (nonzero) digits is 32256000, while the sum is 61.

The spelling of 45550889728 in words is "forty-five billion, five hundred fifty million, eight hundred eighty-nine thousand, seven hundred twenty-eight".