1323445112505 has 24 divisors (see below), whose sum is σ = 2294010658368. Its totient is φ = 705825353376.

The previous prime is 1323445112443. The next prime is 1323445112533. The reversal of 1323445112505 is 5052115443231.

1323445112505 is a `hidden beast` number, since 1 + 3 + 2 + 34 + 4 + 5 + 112 + 505 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-1323445112505 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1323445112505.

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, 2833294 + ... + 3267176.

It is an arithmetic number, because the mean of its divisors is an integer number (95583777432).

Almost surely, 2^{1323445112505} is an apocalyptic number.

1323445112505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1323445112505 is a deficient number, since it is larger than the sum of its proper divisors (970565545863).

1323445112505 is a wasteful number, since it uses less digits than its factorization.

1323445112505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501677 (or 501674 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 1323445112505 in words is "one trillion, three hundred twenty-three billion, four hundred forty-five million, one hundred twelve thousand, five hundred five".