5556416645 has 12 divisors (see below), whose sum is σ = 7220054916. Its totient is φ = 4103199360.

The previous prime is 5556416641. The next prime is 5556416683. The reversal of 5556416645 is 5466146555.

It can be written as a sum of positive squares in 6 ways, for example, as 794450596 + 4761966049 = 28186^2 + 69007^2 .

It is not a de Polignac number, because 5556416645 - 2² = 5556416641 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5556416645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5556416641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3286976 + ... + 3288665.

It is an arithmetic number, because the mean of its divisors is an integer number (601671243).

Almost surely, 2^5556416645 is an apocalyptic number.

It is an amenable number.

5556416645 is a deficient number, since it is larger than the sum of its proper divisors (1663638271).

5556416645 is a wasteful number, since it uses less digits than its factorization.

5556416645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6575672 (or 6575659 counting only the distinct ones).

The product of its digits is 2160000, while the sum is 47.

The square root of 5556416645 is about 74541.3753897793. The cubic root of 5556416645 is about 1771.1891149848.

The spelling of 5556416645 in words is "five billion, five hundred fifty-six million, four hundred sixteen thousand, six hundred forty-five".