11244620891 has 12 divisors (see below), whose sum is σ = 13358788128. Its totient is φ = 9433175472.

The previous prime is 11244620861. The next prime is 11244620899. The reversal of 11244620891 is 19802644211.

It is a de Polignac number, because none of the positive numbers 2^k-11244620891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11244620899) 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 11 ways as a sum of consecutive naturals, for example, 2438996 + ... + 2443601.

It is an arithmetic number, because the mean of its divisors is an integer number (1113232344).

Almost surely, 2^11244620891 is an apocalyptic number.

11244620891 is a deficient number, since it is larger than the sum of its proper divisors (2114167237).

11244620891 is an equidigital number, since it uses as much as digits as its factorization.

11244620891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4882658 (or 4882651 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The spelling of 11244620891 in words is "eleven billion, two hundred forty-four million, six hundred twenty thousand, eight hundred ninety-one".