5661544672 has 36 divisors (see below), whose sum is σ = 12965951880. Its totient is φ = 2426375616.

The previous prime is 5661544661. The next prime is 5661544699. The reversal of 5661544672 is 2764451665.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1803772 + ... + 1806907.

It is an arithmetic number, because the mean of its divisors is an integer number (360165330).

Almost surely, 2^5661544672 is an apocalyptic number.

It is an amenable number.

5661544672 is an abundant number, since it is smaller than the sum of its proper divisors (7304407208).

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

5661544672 is a wasteful number, since it uses less digits than its factorization.

5661544672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3610703 (or 3610688 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 46.

The square root of 5661544672 is about 75243.2367193225. The cubic root of 5661544672 is about 1782.2897637376.

The spelling of 5661544672 in words is "five billion, six hundred sixty-one million, five hundred forty-four thousand, six hundred seventy-two".