11056561451 has 16 divisors (see below), whose sum is σ = 12152173824. Its totient is φ = 9996614784.

The previous prime is 11056561441. The next prime is 11056561457. The reversal of 11056561451 is 15416565011.

It is a happy number.

11056561451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11056561451 - 2¹⁴ = 11056545067 is a prime.

It is a super-2 number, since 2×11056561451² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11056561457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 405005 + ... + 431441.

It is an arithmetic number, because the mean of its divisors is an integer number (759510864).

Almost surely, 2^11056561451 is an apocalyptic number.

11056561451 is a deficient number, since it is larger than the sum of its proper divisors (1095612373).

11056561451 is a wasteful number, since it uses less digits than its factorization.

11056561451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27110.

The product of its (nonzero) digits is 18000, while the sum is 35.

The spelling of 11056561451 in words is "eleven billion, fifty-six million, five hundred sixty-one thousand, four hundred fifty-one".