11821853033 has 4 divisors (see below), whose sum is σ = 11849155668. Its totient is φ = 11794550400.

The previous prime is 11821853027. The next prime is 11821853047. The reversal of 11821853033 is 33035812811.

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 6306265744 + 5515587289 = 79412^2 + 74267^2 .

It is a cyclic number.

It is not a de Polignac number, because 11821853033 - 2⁶ = 11821852969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11821852984 and 11821853002.

It is not an unprimeable number, because it can be changed into a prime (11821853063) 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, 13650668 + ... + 13651533.

It is an arithmetic number, because the mean of its divisors is an integer number (2962288917).

Almost surely, 2^11821853033 is an apocalyptic number.

It is an amenable number.

11821853033 is a deficient number, since it is larger than the sum of its proper divisors (27302635).

11821853033 is an equidigital number, since it uses as much as digits as its factorization.

11821853033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27302634.

The product of its (nonzero) digits is 17280, while the sum is 35.

The spelling of 11821853033 in words is "eleven billion, eight hundred twenty-one million, eight hundred fifty-three thousand, thirty-three".