5660600166561 has 4 divisors (see below), whose sum is σ = 7547466888752. Its totient is φ = 3773733444372.

The previous prime is 5660600166547. The next prime is 5660600166569. The reversal of 5660600166561 is 1656610060665.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 5660600166561 - 2¹⁸ = 5660599904417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5660600166561.

It is not an unprimeable number, because it can be changed into a prime (5660600166569) 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, 943433361091 + ... + 943433361096.

It is an arithmetic number, because the mean of its divisors is an integer number (1886866722188).

Almost surely, 2^{5660600166561} is an apocalyptic number.

It is an amenable number.

5660600166561 is a deficient number, since it is larger than the sum of its proper divisors (1886866722191).

5660600166561 is a wasteful number, since it uses less digits than its factorization.

5660600166561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886866722190.

The product of its (nonzero) digits is 1166400, while the sum is 48.

The spelling of 5660600166561 in words is "five trillion, six hundred sixty billion, six hundred million, one hundred sixty-six thousand, five hundred sixty-one".