5661665505177 has 16 divisors (see below), whose sum is σ = 8235191566080. Its totient is φ = 3431295035600.

The previous prime is 5661665505163. The next prime is 5661665505179. The reversal of 5661665505177 is 7715055661665.

It is a cyclic number.

It is not a de Polignac number, because 5661665505177 - 2⁴ = 5661665505161 is a prime.

It is a super-2 number, since 2×5661665505177² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5661665505177.

It is not an unprimeable number, because it can be changed into a prime (5661665505179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9701602 + ... + 10268612.

It is an arithmetic number, because the mean of its divisors is an integer number (514699472880).

Almost surely, 2^{5661665505177} is an apocalyptic number.

It is an amenable number.

5661665505177 is a deficient number, since it is larger than the sum of its proper divisors (2573526060903).

5661665505177 is a wasteful number, since it uses less digits than its factorization.

5661665505177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869604.

The product of its (nonzero) digits is 39690000, while the sum is 60.

The spelling of 5661665505177 in words is "five trillion, six hundred sixty-one billion, six hundred sixty-five million, five hundred five thousand, one hundred seventy-seven".