33217679797 has 4 divisors (see below), whose sum is σ = 33220943136. Its totient is φ = 33214416460.

The previous prime is 33217679753. The next prime is 33217679801. The reversal of 33217679797 is 79797671233.

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: 79797671233 = 7 ⋅11399667319.

It is a cyclic number.

It is not a de Polignac number, because 33217679797 - 2¹⁹ = 33217155509 is a prime.

It is a super-2 number, since 2×33217679797² (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 (33217779797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1616353 + ... + 1636774.

It is an arithmetic number, because the mean of its divisors is an integer number (8305235784).

Almost surely, 2^33217679797 is an apocalyptic number.

It is an amenable number.

33217679797 is a deficient number, since it is larger than the sum of its proper divisors (3263339).

33217679797 is a wasteful number, since it uses less digits than its factorization.

33217679797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3263338.

The product of its digits is 21003948, while the sum is 61.

The spelling of 33217679797 in words is "thirty-three billion, two hundred seventeen million, six hundred seventy-nine thousand, seven hundred ninety-seven".