1123131633505 has 24 divisors (see below), whose sum is σ = 1570809467880. Its totient is φ = 768669108480.

The previous prime is 1123131633467. The next prime is 1123131633523. The reversal of 1123131633505 is 5053361313211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6489269136 + 1116642364369 = 80556^2 + 1056713^2 .

It is not a de Polignac number, because 1123131633505 - 2⁹ = 1123131632993 is a prime.

It is a super-2 number, since 2×1123131633505² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4271790 + ... + 4527079.

It is an arithmetic number, because the mean of its divisors is an integer number (65450394495).

Almost surely, 2^{1123131633505} is an apocalyptic number.

It is an amenable number.

1123131633505 is a deficient number, since it is larger than the sum of its proper divisors (447677834375).

1123131633505 is an equidigital number, since it uses as much as digits as its factorization.

1123131633505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8799409 (or 8799402 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 34.

Adding to 1123131633505 its reverse (5053361313211), we get a palindrome (6176492946716).

The spelling of 1123131633505 in words is "one trillion, one hundred twenty-three billion, one hundred thirty-one million, six hundred thirty-three thousand, five hundred five".