11281911461 has 4 divisors (see below), whose sum is σ = 11310329772. Its totient is φ = 11253493152.

The previous prime is 11281911367. The next prime is 11281911469. The reversal of 11281911461 is 16411918211.

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 9583235236 + 1698676225 = 97894^2 + 41215^2 .

It is a cyclic number.

It is not a de Polignac number, because 11281911461 - 2³⁰ = 10208169637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11281911469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14208560 + ... + 14209353.

It is an arithmetic number, because the mean of its divisors is an integer number (2827582443).

Almost surely, 2^11281911461 is an apocalyptic number.

It is an amenable number.

11281911461 is a deficient number, since it is larger than the sum of its proper divisors (28418311).

11281911461 is an equidigital number, since it uses as much as digits as its factorization.

11281911461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28418310.

The product of its digits is 3456, while the sum is 35.

The spelling of 11281911461 in words is "eleven billion, two hundred eighty-one million, nine hundred eleven thousand, four hundred sixty-one".