11538644485 has 16 divisors (see below), whose sum is σ = 14452940160. Its totient is φ = 8826790720.

The previous prime is 11538644471. The next prime is 11538644503. The reversal of 11538644485 is 58444683511.

It is not a de Polignac number, because 11538644485 - 2¹⁵ = 11538611717 is a prime.

It is a congruent number.

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, 397806 + ... + 425824.

It is an arithmetic number, because the mean of its divisors is an integer number (903308760).

Almost surely, 2^11538644485 is an apocalyptic number.

It is an amenable number.

11538644485 is a deficient number, since it is larger than the sum of its proper divisors (2914295675).

11538644485 is a wasteful number, since it uses less digits than its factorization.

11538644485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31628.

The product of its digits is 1843200, while the sum is 49.

The spelling of 11538644485 in words is "eleven billion, five hundred thirty-eight million, six hundred forty-four thousand, four hundred eighty-five".