11456263433561 has 4 divisors (see below), whose sum is σ = 12130161282612. Its totient is φ = 10782365584512.

The previous prime is 11456263433509. The next prime is 11456263433597. The reversal of 11456263433561 is 16533436265411.

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 8175024640000 + 3281238793561 = 2859200^2 + 1811419^2 .

It is a cyclic number.

It is not a de Polignac number, because 11456263433561 - 2⁴² = 7058216922457 is a prime.

It is a super-2 number, since 2×11456263433561² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11456263433501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336948924500 + ... + 336948924533.

It is an arithmetic number, because the mean of its divisors is an integer number (3032540320653).

Almost surely, 2^{11456263433561} is an apocalyptic number.

It is an amenable number.

11456263433561 is a deficient number, since it is larger than the sum of its proper divisors (673897849051).

11456263433561 is an equidigital number, since it uses as much as digits as its factorization.

11456263433561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673897849050.

The product of its digits is 4665600, while the sum is 50.

Adding to 11456263433561 its reverse (16533436265411), we get a palindrome (27989699698972).

The spelling of 11456263433561 in words is "eleven trillion, four hundred fifty-six billion, two hundred sixty-three million, four hundred thirty-three thousand, five hundred sixty-one".