5571660661755 has 16 divisors (see below), whose sum is σ = 8915309567520. Its totient is φ = 2971334850048.

The previous prime is 5571660661751. The next prime is 5571660661757.

5571660661755 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5571660661755 - 2² = 5571660661751 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5571660661751) 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, 13382062 + ... + 13792131.

It is an arithmetic number, because the mean of its divisors is an integer number (557206847970).

Almost surely, 2^{5571660661755} is an apocalyptic number.

5571660661755 is a deficient number, since it is larger than the sum of its proper divisors (3343648905765).

5571660661755 is a wasteful number, since it uses less digits than its factorization.

5571660661755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27187870.

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

The spelling of 5571660661755 in words is "five trillion, five hundred seventy-one billion, six hundred sixty million, six hundred sixty-one thousand, seven hundred fifty-five".