1166441573557 has 16 divisors (see below), whose sum is σ = 1286868566592. Its totient is φ = 1050402948480.

The previous prime is 1166441573543. The next prime is 1166441573659. The reversal of 1166441573557 is 7553751446611.

It is a cyclic number.

It is not a de Polignac number, because 1166441573557 - 2¹¹ = 1166441571509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1166441573498 and 1166441573507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166441573537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14856598 + ... + 14934904.

It is an arithmetic number, because the mean of its divisors is an integer number (80429285412).

Almost surely, 2^{1166441573557} is an apocalyptic number.

It is an amenable number.

1166441573557 is a deficient number, since it is larger than the sum of its proper divisors (120426993035).

1166441573557 is a wasteful number, since it uses less digits than its factorization.

1166441573557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106308.

The product of its digits is 10584000, while the sum is 55.

The spelling of 1166441573557 in words is "one trillion, one hundred sixty-six billion, four hundred forty-one million, five hundred seventy-three thousand, five hundred fifty-seven".