1166123323156 has 36 divisors (see below), whose sum is σ = 2285423562996. Its totient is φ = 520054986880.

The previous prime is 1166123323153. The next prime is 1166123323159. The reversal of 1166123323156 is 6513233216611.

It is an interprime number because it is at equal distance from previous prime (1166123323153) and next prime (1166123323159).

It can be written as a sum of positive squares in 2 ways, for example, as 654205968900 + 511917354256 = 808830^2 + 715484^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166123323153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22704025 + ... + 22755328.

It is an arithmetic number, because the mean of its divisors is an integer number (63483987861).

Almost surely, 2^{1166123323156} is an apocalyptic number.

It is an amenable number.

1166123323156 is a deficient number, since it is larger than the sum of its proper divisors (1119300239840).

1166123323156 is a wasteful number, since it uses less digits than its factorization.

1166123323156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45459432 (or 45459419 counting only the distinct ones).

The product of its digits is 116640, while the sum is 40.

Adding to 1166123323156 its reverse (6513233216611), we get a palindrome (7679356539767).

The spelling of 1166123323156 in words is "one trillion, one hundred sixty-six billion, one hundred twenty-three million, three hundred twenty-three thousand, one hundred fifty-six".