11538634755 has 16 divisors (see below), whose sum is σ = 18464129280. Its totient is φ = 6153167328.

The previous prime is 11538634721. The next prime is 11538634759. The reversal of 11538634755 is 55743683511.

It is not a de Polignac number, because 11538634755 - 2⁹ = 11538634243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11538634759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87874 + ... + 175496.

It is an arithmetic number, because the mean of its divisors is an integer number (1154008080).

Almost surely, 2^11538634755 is an apocalyptic number.

11538634755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11538634755 is a deficient number, since it is larger than the sum of its proper divisors (6925494525).

11538634755 is an equidigital number, since it uses as much as digits as its factorization.

11538634755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96410.

The product of its digits is 1512000, while the sum is 48.

The spelling of 11538634755 in words is "eleven billion, five hundred thirty-eight million, six hundred thirty-four thousand, seven hundred fifty-five".