11312255505545 has 24 divisors (see below), whose sum is σ = 13999124896344. Its totient is φ = 8775161611776.

The previous prime is 11312255505517. The next prime is 11312255505557. The reversal of 11312255505545 is 54550555221311.

It can be written as a sum of positive squares in 12 ways, for example, as 285552365641 + 11026703139904 = 534371^2 + 3320648^2 .

It is not a de Polignac number, because 11312255505545 - 2³² = 11307960538249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11312255505496 and 11312255505505.

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, 814604 + ... + 4825773.

It is an arithmetic number, because the mean of its divisors is an integer number (583296870681).

Almost surely, 2^{11312255505545} is an apocalyptic number.

It is an amenable number.

11312255505545 is a deficient number, since it is larger than the sum of its proper divisors (2686869390799).

11312255505545 is an equidigital number, since it uses as much as digits as its factorization.

11312255505545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5640749 (or 5640712 counting only the distinct ones).

The product of its (nonzero) digits is 750000, while the sum is 44.

The spelling of 11312255505545 in words is "eleven trillion, three hundred twelve billion, two hundred fifty-five million, five hundred five thousand, five hundred forty-five".