33345214981 has 4 divisors (see below), whose sum is σ = 35910231532. Its totient is φ = 30780198432.

The previous prime is 33345214979. The next prime is 33345215003. The reversal of 33345214981 is 18941254333.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18941254333 = 41 ⋅461981813.

It can be written as a sum of positive squares in 2 ways, for example, as 7338492225 + 26006722756 = 85665^2 + 161266^2 .

It is a cyclic number.

It is not a de Polignac number, because 33345214981 - 2¹ = 33345214979 is a prime.

It is a super-2 number, since 2×33345214981² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33345214951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1282508256 + ... + 1282508281.

It is an arithmetic number, because the mean of its divisors is an integer number (8977557883).

Almost surely, 2^33345214981 is an apocalyptic number.

It is an amenable number.

33345214981 is a deficient number, since it is larger than the sum of its proper divisors (2565016551).

33345214981 is a wasteful number, since it uses less digits than its factorization.

33345214981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2565016550.

The product of its digits is 311040, while the sum is 43.

The spelling of 33345214981 in words is "thirty-three billion, three hundred forty-five million, two hundred fourteen thousand, nine hundred eighty-one".