45521745666 has 16 divisors (see below), whose sum is σ = 91045684800. Its totient is φ = 15173549648.

The previous prime is 45521745623. The next prime is 45521745673. The reversal of 45521745666 is 66654712554.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322780 + ... + 441848.

It is an arithmetic number, because the mean of its divisors is an integer number (5690355300).

Almost surely, 2^45521745666 is an apocalyptic number.

45521745666 is an abundant number, since it is smaller than the sum of its proper divisors (45523939134).

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

45521745666 is a wasteful number, since it uses less digits than its factorization.

45521745666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182793.

The product of its digits is 6048000, while the sum is 51.

The spelling of 45521745666 in words is "forty-five billion, five hundred twenty-one million, seven hundred forty-five thousand, six hundred sixty-six".