33224068991 has 4 divisors (see below), whose sum is σ = 34295813184. Its totient is φ = 32152324800.

The previous prime is 33224068973. The next prime is 33224069003. The reversal of 33224068991 is 19986042233.

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

It is a cyclic number.

It is not a de Polignac number, because 33224068991 - 2²⁶ = 33156960127 is a prime.

It is a super-2 number, since 2×33224068991² (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 (33224068291) 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, 535872050 + ... + 535872111.

It is an arithmetic number, because the mean of its divisors is an integer number (8573953296).

Almost surely, 2^33224068991 is an apocalyptic number.

33224068991 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

33224068991 is a deficient number, since it is larger than the sum of its proper divisors (1071744193).

33224068991 is a wasteful number, since it uses less digits than its factorization.

33224068991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071744192.

The product of its (nonzero) digits is 559872, while the sum is 47.

The spelling of 33224068991 in words is "thirty-three billion, two hundred twenty-four million, sixty-eight thousand, nine hundred ninety-one".