11403504505 has 8 divisors (see below), whose sum is σ = 13684883400. Its totient is φ = 9122351616.

The previous prime is 11403504401. The next prime is 11403504509. The reversal of 11403504505 is 50540530411.

It can be written as a sum of positive squares in 4 ways, for example, as 413756281 + 10989748224 = 20341^2 + 104832^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11403504505 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11403504509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88201 + ... + 174889.

It is an arithmetic number, because the mean of its divisors is an integer number (1710610425).

Almost surely, 2^11403504505 is an apocalyptic number.

It is an amenable number.

11403504505 is a deficient number, since it is larger than the sum of its proper divisors (2281378895).

11403504505 is an equidigital number, since it uses as much as digits as its factorization.

11403504505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113003.

The product of its (nonzero) digits is 6000, while the sum is 28.

The spelling of 11403504505 in words is "eleven billion, four hundred three million, five hundred four thousand, five hundred five".