5555064645 has 120 divisors (see below), whose sum is σ = 10858750056. Its totient is φ = 2715628032.

The previous prime is 5555064577. The next prime is 5555064649. The reversal of 5555064645 is 5464605555.

5555064645 is a `hidden beast` number, since 55 + 550 + 6 + 4 + 6 + 45 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 2621542401 + 2933522244 = 51201^2 + 54162^2 .

It is not a de Polignac number, because 5555064645 - 2⁹ = 5555064133 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 5555064645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5555064649) by changing a digit.

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 119 ways as a sum of consecutive naturals, for example, 18959119 + ... + 18959411.

Almost surely, 2^5555064645 is an apocalyptic number.

It is an amenable number.

5555064645 is a deficient number, since it is larger than the sum of its proper divisors (5303685411).

5555064645 is a wasteful number, since it uses less digits than its factorization.

5555064645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613 (or 591 counting only the distinct ones).

The product of its (nonzero) digits is 1800000, while the sum is 45.

The square root of 5555064645 is about 74532.3060491221. The cubic root of 5555064645 is about 1771.0454467369.

The spelling of 5555064645 in words is "five billion, five hundred fifty-five million, sixty-four thousand, six hundred forty-five".