1123188063505 has 4 divisors (see below), whose sum is σ = 1347825676212. Its totient is φ = 898550450800.

The previous prime is 1123188063499. The next prime is 1123188063533. The reversal of 1123188063505 is 5053608813211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 323980671249 + 799207392256 = 569193^2 + 893984^2 .

It is not a de Polignac number, because 1123188063505 - 2²⁵ = 1123154509073 is a prime.

It is a super-2 number, since 2×1123188063505² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112318806346 + ... + 112318806355.

It is an arithmetic number, because the mean of its divisors is an integer number (336956419053).

Almost surely, 2^{1123188063505} is an apocalyptic number.

It is an amenable number.

1123188063505 is a deficient number, since it is larger than the sum of its proper divisors (224637612707).

1123188063505 is an equidigital number, since it uses as much as digits as its factorization.

1123188063505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224637612706.

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 1123188063505 in words is "one trillion, one hundred twenty-three billion, one hundred eighty-eight million, sixty-three thousand, five hundred five".