11058256691 has 4 divisors (see below), whose sum is σ = 11062899552. Its totient is φ = 11053613832.

The previous prime is 11058256673. The next prime is 11058256697. The reversal of 11058256691 is 19665285011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19665285011 = 401 ⋅49040611.

It is a cyclic number.

It is not a de Polignac number, because 11058256691 - 2³⁰ = 9984514867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11058256697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2317856 + ... + 2322621.

It is an arithmetic number, because the mean of its divisors is an integer number (2765724888).

Almost surely, 2^11058256691 is an apocalyptic number.

11058256691 is a deficient number, since it is larger than the sum of its proper divisors (4642861).

11058256691 is an equidigital number, since it uses as much as digits as its factorization.

11058256691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4642860.

The product of its (nonzero) digits is 129600, while the sum is 44.

The spelling of 11058256691 in words is "eleven billion, fifty-eight million, two hundred fifty-six thousand, six hundred ninety-one".