11833535081 has 4 divisors (see below), whose sum is σ = 11837842500. Its totient is φ = 11829227664.

The previous prime is 11833535059. The next prime is 11833535089. The reversal of 11833535081 is 18053533811.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4618561600 + 7214973481 = 67960^2 + 84941^2 .

It is a cyclic number.

It is not a de Polignac number, because 11833535081 - 2⁶ = 11833535017 is a prime.

It is a super-2 number, since 2×11833535081² (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 (11833535089) 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, 2149586 + ... + 2155083.

It is an arithmetic number, because the mean of its divisors is an integer number (2959460625).

Almost surely, 2^11833535081 is an apocalyptic number.

It is an amenable number.

11833535081 is a deficient number, since it is larger than the sum of its proper divisors (4307419).

11833535081 is an equidigital number, since it uses as much as digits as its factorization.

11833535081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4307418.

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 11833535081 in words is "eleven billion, eight hundred thirty-three million, five hundred thirty-five thousand, eighty-one".