5581039656 has 32 divisors (see below), whose sum is σ = 13960454400. Its totient is φ = 1859299200.

The previous prime is 5581039601. The next prime is 5581039661. The reversal of 5581039656 is 6569301855.

It is a happy number.

It is a super-2 number, since 2×5581039656² = 62296007283689196672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21336 + ... + 107783.

It is an arithmetic number, because the mean of its divisors is an integer number (436264200).

Almost surely, 2^5581039656 is an apocalyptic number.

It is an amenable number.

5581039656 is an abundant number, since it is smaller than the sum of its proper divisors (8379414744).

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

5581039656 is a wasteful number, since it uses less digits than its factorization.

5581039656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130929 (or 130925 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 48.

The square root of 5581039656 is about 74706.3561954403. The cubic root of 5581039656 is about 1773.8015748022.

The spelling of 5581039656 in words is "five billion, five hundred eighty-one million, thirty-nine thousand, six hundred fifty-six".