33873578881 has 4 divisors (see below), whose sum is σ = 33873970500. Its totient is φ = 33873187264.

The previous prime is 33873578863. The next prime is 33873578933. The reversal of 33873578881 is 18887537833.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 18208803600 + 15664775281 = 134940^2 + 125159^2 .

It is a cyclic number.

It is not a de Polignac number, because 33873578881 - 2⁹ = 33873578369 is a prime.

It is a super-2 number, since 2×33873578881² (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 (33873578381) 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, 2356 + ... + 260293.

It is an arithmetic number, because the mean of its divisors is an integer number (8468492625).

Almost surely, 2^33873578881 is an apocalyptic number.

It is an amenable number.

33873578881 is a deficient number, since it is larger than the sum of its proper divisors (391619).

33873578881 is a wasteful number, since it uses less digits than its factorization.

33873578881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391618.

The product of its digits is 27095040, while the sum is 61.

The spelling of 33873578881 in words is "thirty-three billion, eight hundred seventy-three million, five hundred seventy-eight thousand, eight hundred eighty-one".