1166789562289 has 8 divisors (see below), whose sum is σ = 1256659308072. Its totient is φ = 1076936488320.

The previous prime is 1166789562247. The next prime is 1166789562311. The reversal of 1166789562289 is 9822659876611.

It can be written as a sum of positive squares in 4 ways, for example, as 163937531664 + 1002852030625 = 404892^2 + 1001425^2 .

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 1166789562289 - 2¹³ = 1166789554097 is a prime.

It is a super-2 number, since 2×1166789562289² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1166789562089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4022404 + ... + 4302709.

It is an arithmetic number, because the mean of its divisors is an integer number (157082413509).

Almost surely, 2^{1166789562289} is an apocalyptic number.

It is an amenable number.

1166789562289 is a deficient number, since it is larger than the sum of its proper divisors (89869745783).

1166789562289 is a wasteful number, since it uses less digits than its factorization.

1166789562289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8335907.

The product of its digits is 156764160, while the sum is 70.

The spelling of 1166789562289 in words is "one trillion, one hundred sixty-six billion, seven hundred eighty-nine million, five hundred sixty-two thousand, two hundred eighty-nine".