5661650611 has 4 divisors (see below), whose sum is σ = 5661928800. Its totient is φ = 5661372424.

The previous prime is 5661650593. The next prime is 5661650653. The reversal of 5661650611 is 1160561665.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5661650611 - 2²³ = 5653262003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5661650411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105931 + ... + 150148.

It is an arithmetic number, because the mean of its divisors is an integer number (1415482200).

Almost surely, 2^5661650611 is an apocalyptic number.

5661650611 is a deficient number, since it is larger than the sum of its proper divisors (278189).

5661650611 is a wasteful number, since it uses less digits than its factorization.

5661650611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278188.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 5661650611 is about 75243.9406929222. The cubic root of 5661650611 is about 1782.3008804221.

The spelling of 5661650611 in words is "five billion, six hundred sixty-one million, six hundred fifty thousand, six hundred eleven".