11219488491 has 16 divisors (see below), whose sum is σ = 15314144384. Its totient is φ = 7302403584.

The previous prime is 11219488459. The next prime is 11219488499. The reversal of 11219488491 is 19488491211.

It is not a de Polignac number, because 11219488491 - 2⁵ = 11219488459 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11219488491.

It is not an unprimeable number, because it can be changed into a prime (11219488499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284235 + ... + 321291.

It is an arithmetic number, because the mean of its divisors is an integer number (957134024).

Almost surely, 2^11219488491 is an apocalyptic number.

11219488491 is a deficient number, since it is larger than the sum of its proper divisors (4094655893).

11219488491 is a wasteful number, since it uses less digits than its factorization.

11219488491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39450.

The product of its digits is 165888, while the sum is 48.

The spelling of 11219488491 in words is "eleven billion, two hundred nineteen million, four hundred eighty-eight thousand, four hundred ninety-one".