33481213481 has 4 divisors (see below), whose sum is σ = 33495716100. Its totient is φ = 33466710864.

The previous prime is 33481213417. The next prime is 33481213511. The reversal of 33481213481 is 18431218433.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18431218433 = 41 ⋅449541913.

It can be written as a sum of positive squares in 2 ways, for example, as 19055041600 + 14426171881 = 138040^2 + 120109^2 .

It is a cyclic number.

It is not a de Polignac number, because 33481213481 - 2⁶ = 33481213417 is a prime.

It is a super-2 number, since 2×33481213481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (33481213981) 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, 7247846 + ... + 7252463.

It is an arithmetic number, because the mean of its divisors is an integer number (8373929025).

Almost surely, 2^33481213481 is an apocalyptic number.

It is an amenable number.

33481213481 is a deficient number, since it is larger than the sum of its proper divisors (14502619).

33481213481 is a wasteful number, since it uses less digits than its factorization.

33481213481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14502618.

The product of its digits is 55296, while the sum is 38.

The spelling of 33481213481 in words is "thirty-three billion, four hundred eighty-one million, two hundred thirteen thousand, four hundred eighty-one".