11803015081 has 16 divisors (see below), whose sum is σ = 13873547520. Its totient is φ = 9899579520.

The previous prime is 11803015043. The next prime is 11803015117. The reversal of 11803015081 is 18051030811.

It is a cyclic number.

It is not a de Polignac number, because 11803015081 - 2⁷ = 11803014953 is a prime.

It is a super-2 number, since 2×11803015081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11803415081) 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, 275005 + ... + 315013.

It is an arithmetic number, because the mean of its divisors is an integer number (867096720).

Almost surely, 2^11803015081 is an apocalyptic number.

11803015081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11803015081 is a deficient number, since it is larger than the sum of its proper divisors (2070532439).

11803015081 is a wasteful number, since it uses less digits than its factorization.

11803015081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42096.

The product of its (nonzero) digits is 960, while the sum is 28.

Adding to 11803015081 its reverse (18051030811), we get a palindrome (29854045892).

The spelling of 11803015081 in words is "eleven billion, eight hundred three million, fifteen thousand, eighty-one".