11570666211571 has 4 divisors (see below), whose sum is σ = 11587607158392. Its totient is φ = 11553725264752.

The previous prime is 11570666211551. The next prime is 11570666211631. The reversal of 11570666211571 is 17511266607511.

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 11570666211571 - 2¹⁹ = 11570665687283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11570666211551) 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, 8470472386 + ... + 8470473751.

It is an arithmetic number, because the mean of its divisors is an integer number (2896901789598).

Almost surely, 2^{11570666211571} is an apocalyptic number.

11570666211571 is a deficient number, since it is larger than the sum of its proper divisors (16940946821).

11570666211571 is an equidigital number, since it uses as much as digits as its factorization.

11570666211571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16940946820.

The product of its (nonzero) digits is 529200, while the sum is 49.

It can be divided in two parts, 1157066 and 6211571, that added together give a palindrome (7368637).

The spelling of 11570666211571 in words is "eleven trillion, five hundred seventy billion, six hundred sixty-six million, two hundred eleven thousand, five hundred seventy-one".