11504268491 has 4 divisors (see below), whose sum is σ = 11505413952. Its totient is φ = 11503123032.

The previous prime is 11504268473. The next prime is 11504268493. The reversal of 11504268491 is 19486240511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11504268491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11504268493) 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, 557531 + ... + 577796.

It is an arithmetic number, because the mean of its divisors is an integer number (2876353488).

Almost surely, 2^11504268491 is an apocalyptic number.

11504268491 is a deficient number, since it is larger than the sum of its proper divisors (1145461).

11504268491 is a wasteful number, since it uses less digits than its factorization.

11504268491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145460.

The product of its (nonzero) digits is 69120, while the sum is 41.

The spelling of 11504268491 in words is "eleven billion, five hundred four million, two hundred sixty-eight thousand, four hundred ninety-one".