33404820481 has 4 divisors (see below), whose sum is σ = 33407366832. Its totient is φ = 33402274132.

The previous prime is 33404820473. The next prime is 33404820503. The reversal of 33404820481 is 18402840433.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18402840433 = 911 ⋅20200703.

It is a cyclic number.

It is not a de Polignac number, because 33404820481 - 2³ = 33404820473 is a prime.

It is a super-2 number, since 2×33404820481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33404820481.

It is not an unprimeable number, because it can be changed into a prime (33404820781) 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, 1253395 + ... + 1279768.

It is an arithmetic number, because the mean of its divisors is an integer number (8351841708).

Almost surely, 2^33404820481 is an apocalyptic number.

It is an amenable number.

33404820481 is a deficient number, since it is larger than the sum of its proper divisors (2546351).

33404820481 is a wasteful number, since it uses less digits than its factorization.

33404820481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2546350.

The product of its (nonzero) digits is 73728, while the sum is 37.

The spelling of 33404820481 in words is "thirty-three billion, four hundred four million, eight hundred twenty thousand, four hundred eighty-one".