5600661561 has 12 divisors (see below), whose sum is σ = 8825285040. Its totient is φ = 3394340280.

The previous prime is 5600661523. The next prime is 5600661571. The reversal of 5600661561 is 1651660065.

It is not a de Polignac number, because 5600661561 - 2⁶ = 5600661497 is a prime.

It is a super-3 number, since 3×5600661561³ (a number of 30 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (5600661571) 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, 28286071 + ... + 28286268.

It is an arithmetic number, because the mean of its divisors is an integer number (735440420).

Almost surely, 2^5600661561 is an apocalyptic number.

It is an amenable number.

5600661561 is a deficient number, since it is larger than the sum of its proper divisors (3224623479).

5600661561 is a wasteful number, since it uses less digits than its factorization.

5600661561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56572356 (or 56572353 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 5600661561 is about 74837.5678453008. The cubic root of 5600661561 is about 1775.8779296197.

The spelling of 5600661561 in words is "five billion, six hundred million, six hundred sixty-one thousand, five hundred sixty-one".