1123866532187 has 32 divisors (see below), whose sum is σ = 1421786649600. Its totient is φ = 867228008064.

The previous prime is 1123866532093. The next prime is 1123866532307. The reversal of 1123866532187 is 7812356683211.

It is not a de Polignac number, because 1123866532187 - 2²² = 1123862337883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1123866532487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1059764 + ... + 1835982.

It is an arithmetic number, because the mean of its divisors is an integer number (44430832800).

Almost surely, 2^{1123866532187} is an apocalyptic number.

1123866532187 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1123866532187 is a deficient number, since it is larger than the sum of its proper divisors (297920117413).

1123866532187 is an frugal number, since it uses more digits than its factorization.

1123866532187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776312 (or 776266 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 53.

The spelling of 1123866532187 in words is "one trillion, one hundred twenty-three billion, eight hundred sixty-six million, five hundred thirty-two thousand, one hundred eighty-seven".