5661610611 has 16 divisors (see below), whose sum is σ = 7769723808. Its totient is φ = 3664396800.

The previous prime is 5661610571. The next prime is 5661610613. The reversal of 5661610611 is 1160161665.

It is not a de Polignac number, because 5661610611 - 2⁶ = 5661610547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5661610613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4150 + ... + 106491.

It is an arithmetic number, because the mean of its divisors is an integer number (485607738).

Almost surely, 2^5661610611 is an apocalyptic number.

5661610611 is a deficient number, since it is larger than the sum of its proper divisors (2108113197).

5661610611 is a wasteful number, since it uses less digits than its factorization.

5661610611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111142.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 5661610611 is about 75243.6748903189. The cubic root of 5661610611 is about 1782.2966830476.

The spelling of 5661610611 in words is "five billion, six hundred sixty-one million, six hundred ten thousand, six hundred eleven".