11838357563 has 4 divisors (see below), whose sum is σ = 12113668248. Its totient is φ = 11563046880.

The previous prime is 11838357547. The next prime is 11838357571. The reversal of 11838357563 is 36575383811.

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

It is a cyclic number.

It is not a de Polignac number, because 11838357563 - 2⁴ = 11838357547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11838357523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137655278 + ... + 137655363.

It is an arithmetic number, because the mean of its divisors is an integer number (3028417062).

Almost surely, 2^11838357563 is an apocalyptic number.

11838357563 is a deficient number, since it is larger than the sum of its proper divisors (275310685).

11838357563 is an equidigital number, since it uses as much as digits as its factorization.

11838357563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275310684.

The product of its digits is 1814400, while the sum is 50.

The spelling of 11838357563 in words is "eleven billion, eight hundred thirty-eight million, three hundred fifty-seven thousand, five hundred sixty-three".