1123132085728 has 12 divisors (see below), whose sum is σ = 2211166293840. Its totient is φ = 561566042848.

The previous prime is 1123132085723. The next prime is 1123132085729. The reversal of 1123132085728 is 8275802313211.

It is a super-2 number, since 2×1123132085728² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123132085723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17548938808 + ... + 17548938871.

It is an arithmetic number, because the mean of its divisors is an integer number (184263857820).

Almost surely, 2^{1123132085728} is an apocalyptic number.

It is an amenable number.

1123132085728 is a deficient number, since it is larger than the sum of its proper divisors (1088034208112).

1123132085728 is an equidigital number, since it uses as much as digits as its factorization.

1123132085728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35097877689 (or 35097877681 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

Adding to 1123132085728 its reverse (8275802313211), we get a palindrome (9398934398939).

The spelling of 1123132085728 in words is "one trillion, one hundred twenty-three billion, one hundred thirty-two million, eighty-five thousand, seven hundred twenty-eight".