33028718881 has 4 divisors (see below), whose sum is σ = 33176829952. Its totient is φ = 32880607812.

The previous prime is 33028718873. The next prime is 33028718897. The reversal of 33028718881 is 18881782033.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 33028718881 - 2³ = 33028718873 is a prime.

It is a super-2 number, since 2×33028718881² (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 (33028713881) 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, 74055201 + ... + 74055646.

It is an arithmetic number, because the mean of its divisors is an integer number (8294207488).

Almost surely, 2^33028718881 is an apocalyptic number.

It is an amenable number.

33028718881 is a deficient number, since it is larger than the sum of its proper divisors (148111071).

33028718881 is a wasteful number, since it uses less digits than its factorization.

33028718881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148111070.

The product of its (nonzero) digits is 516096, while the sum is 49.

The spelling of 33028718881 in words is "thirty-three billion, twenty-eight million, seven hundred eighteen thousand, eight hundred eighty-one".