33842309881 has 4 divisors (see below), whose sum is σ = 33855736564. Its totient is φ = 33828883200.

The previous prime is 33842309873. The next prime is 33842309899. The reversal of 33842309881 is 18890324833.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18890324833 = 23 ⋅821318471.

It can be written as a sum of positive squares in 2 ways, for example, as 15836964025 + 18005345856 = 125845^2 + 134184^2 .

It is a cyclic number.

It is not a de Polignac number, because 33842309881 - 2³ = 33842309873 is a prime.

It is a super-2 number, since 2×33842309881² (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 (33842309801) 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, 6709560 + ... + 6714601.

It is an arithmetic number, because the mean of its divisors is an integer number (8463934141).

Almost surely, 2^33842309881 is an apocalyptic number.

It is an amenable number.

33842309881 is a deficient number, since it is larger than the sum of its proper divisors (13426683).

33842309881 is a wasteful number, since it uses less digits than its factorization.

33842309881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13426682.

The product of its (nonzero) digits is 995328, while the sum is 49.

The spelling of 33842309881 in words is "thirty-three billion, eight hundred forty-two million, three hundred nine thousand, eight hundred eighty-one".