5445617680 has 40 divisors (see below), whose sum is σ = 13097655000. Its totient is φ = 2103134208.

The previous prime is 5445617669. The next prime is 5445617689. The reversal of 5445617680 is 867165445.

It can be written as a sum of positive squares in 4 ways, for example, as 2350698256 + 3094919424 = 48484^2 + 55632^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 5445617680.

It is not an unprimeable number, because it can be changed into a prime (5445617689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1171305 + ... + 1175944.

It is an arithmetic number, because the mean of its divisors is an integer number (327441375).

Almost surely, 2^5445617680 is an apocalyptic number.

It is an amenable number.

5445617680 is an abundant number, since it is smaller than the sum of its proper divisors (7652037320).

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

5445617680 is a wasteful number, since it uses less digits than its factorization.

5445617680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2347291 (or 2347285 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 46.

The square root of 5445617680 is about 73794.4285159794. The cubic root of 5445617680 is about 1759.3370523129.

The spelling of 5445617680 in words is "five billion, four hundred forty-five million, six hundred seventeen thousand, six hundred eighty".