33773968897 has 4 divisors (see below), whose sum is σ = 33989089876. Its totient is φ = 33558847920.

The previous prime is 33773968873. The next prime is 33773968903. The reversal of 33773968897 is 79886937733.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79886937733 = 1889 ⋅42290597.

It can be written as a sum of positive squares in 2 ways, for example, as 8327657536 + 25446311361 = 91256^2 + 159519^2 .

It is a cyclic number.

It is not a de Polignac number, because 33773968897 - 2¹⁵ = 33773936129 is a prime.

It is a super-2 number, since 2×33773968897² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33773968097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107560254 + ... + 107560567.

It is an arithmetic number, because the mean of its divisors is an integer number (8497272469).

Almost surely, 2^33773968897 is an apocalyptic number.

It is an amenable number.

33773968897 is a deficient number, since it is larger than the sum of its proper divisors (215120979).

33773968897 is a wasteful number, since it uses less digits than its factorization.

33773968897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215120978.

The product of its digits is 288054144, while the sum is 70.

The spelling of 33773968897 in words is "thirty-three billion, seven hundred seventy-three million, nine hundred sixty-eight thousand, eight hundred ninety-seven".