11663361545 has 16 divisors (see below), whose sum is σ = 15340777920. Its totient is φ = 8442235200.

The previous prime is 11663361533. The next prime is 11663361559. The reversal of 11663361545 is 54516336611.

It is not a de Polignac number, because 11663361545 - 2¹⁰ = 11663360521 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 490910 + ... + 514119.

It is an arithmetic number, because the mean of its divisors is an integer number (958798620).

Almost surely, 2^11663361545 is an apocalyptic number.

It is an amenable number.

11663361545 is a deficient number, since it is larger than the sum of its proper divisors (3677416375).

11663361545 is a wasteful number, since it uses less digits than its factorization.

11663361545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005256.

The product of its digits is 194400, while the sum is 41.

The spelling of 11663361545 in words is "eleven billion, six hundred sixty-three million, three hundred sixty-one thousand, five hundred forty-five".