11166352561 has 8 divisors (see below), whose sum is σ = 13743203264. Its totient is φ = 8834916240.

The previous prime is 11166352559. The next prime is 11166352591. The reversal of 11166352561 is 16525366111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11166352561 - 2¹ = 11166352559 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11166352561.

It is not an unprimeable number, because it can be changed into a prime (11166352591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61353495 + ... + 61353676.

It is an arithmetic number, because the mean of its divisors is an integer number (1717900408).

Almost surely, 2^11166352561 is an apocalyptic number.

It is an amenable number.

11166352561 is a deficient number, since it is larger than the sum of its proper divisors (2576850703).

11166352561 is a wasteful number, since it uses less digits than its factorization.

11166352561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122707191.

The product of its digits is 32400, while the sum is 37.

The spelling of 11166352561 in words is "eleven billion, one hundred sixty-six million, three hundred fifty-two thousand, five hundred sixty-one".