5645566542 has 64 divisors (see below), whose sum is σ = 14246959104. Its totient is φ = 1448703840.

The previous prime is 5645566489. The next prime is 5645566543. The reversal of 5645566542 is 2456655465.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 5645566491 and 5645566500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5645566543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35268 + ... + 111959.

It is an arithmetic number, because the mean of its divisors is an integer number (222608736).

Almost surely, 2^5645566542 is an apocalyptic number.

5645566542 is an abundant number, since it is smaller than the sum of its proper divisors (8601392562).

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

5645566542 is a wasteful number, since it uses less digits than its factorization.

5645566542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147333.

The product of its digits is 4320000, while the sum is 48.

The square root of 5645566542 is about 75136.9851804023. The cubic root of 5645566542 is about 1780.6115121085.

The spelling of 5645566542 in words is "five billion, six hundred forty-five million, five hundred sixty-six thousand, five hundred forty-two".