45306399609 has 9 divisors (see below), whose sum is σ = 65443499589. Its totient is φ = 30203840700.

The previous prime is 45306399601. The next prime is 45306399623. The reversal of 45306399609 is 90699360354.

The square root of 45306399609 is 212853.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 45306399609 - 2³ = 45306399601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45306399601) 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 8 ways as a sum of consecutive naturals, for example, 603084 + ... + 674034.

Almost surely, 2^45306399609 is an apocalyptic number.

45306399609 is the 212853-rd square number.

45306399609 is the 106427-th centered octagonal number.

It is an amenable number.

45306399609 is a deficient number, since it is larger than the sum of its proper divisors (20137099980).

45306399609 is an frugal number, since it uses more digits than its factorization.

45306399609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141908 (or 70954 counting only the distinct ones).

The product of its (nonzero) digits is 4723920, while the sum is 54.

The spelling of 45306399609 in words is "forty-five billion, three hundred six million, three hundred ninety-nine thousand, six hundred nine".