9945545055 has 16 divisors (see below), whose sum is σ = 16342950624. Its totient is φ = 5160931200.

The previous prime is 9945545053. The next prime is 9945545059. The reversal of 9945545055 is 5505455499.

It is a happy number.

It is not a de Polignac number, because 9945545055 - 2¹ = 9945545053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9945544989 and 9945545007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9945545053) 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 15 ways as a sum of consecutive naturals, for example, 8959396 + ... + 8960505.

It is an arithmetic number, because the mean of its divisors is an integer number (1021434414).

Almost surely, 2^9945545055 is an apocalyptic number.

9945545055 is a deficient number, since it is larger than the sum of its proper divisors (6397405569).

9945545055 is a wasteful number, since it uses less digits than its factorization.

9945545055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17919946.

The product of its (nonzero) digits is 4050000, while the sum is 51.

The square root of 9945545055 is about 99727.3535946884. The cubic root of 9945545055 is about 2150.5169159119.

The spelling of 9945545055 in words is "nine billion, nine hundred forty-five million, five hundred forty-five thousand, fifty-five".