5665660560987 has 32 divisors (see below), whose sum is σ = 9012157612032. Its totient is φ = 3095587956384.

The previous prime is 5665660560943. The next prime is 5665660561009. The reversal of 5665660560987 is 7890650665665.

It is not a de Polignac number, because 5665660560987 - 2⁸ = 5665660560731 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is not an unprimeable number, because it can be changed into a prime (5665660560887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 937243 + ... + 3494244.

It is an arithmetic number, because the mean of its divisors is an integer number (281629925376).

Almost surely, 2^{5665660560987} is an apocalyptic number.

5665660560987 is a deficient number, since it is larger than the sum of its proper divisors (3346497051045).

5665660560987 is a wasteful number, since it uses less digits than its factorization.

5665660560987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4434167.

The product of its (nonzero) digits is 489888000, while the sum is 69.

The spelling of 5665660560987 in words is "five trillion, six hundred sixty-five billion, six hundred sixty million, five hundred sixty thousand, nine hundred eighty-seven".