33224253642 has 12 divisors (see below), whose sum is σ = 71985882930. Its totient is φ = 11074751208.

The previous prime is 33224253617. The next prime is 33224253649. The reversal of 33224253642 is 24635242233.

33224253642 is a `hidden beast` number, since 3 + 3 + 2 + 2 + 4 + 2 + 5 + 3 + 642 = 666.

It can be written as a sum of positive squares in only one way, i.e., 32634783801 + 589469841 = 180651^2 + 24279^2 .

It is a super-2 number, since 2×33224253642² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33224253597 and 33224253606.

It is not an unprimeable number, because it can be changed into a prime (33224253649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 922895917 + ... + 922895952.

Almost surely, 2^33224253642 is an apocalyptic number.

33224253642 is an abundant number, since it is smaller than the sum of its proper divisors (38761629288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33224253642 is a wasteful number, since it uses less digits than its factorization.

33224253642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845791877 (or 1845791874 counting only the distinct ones).

The product of its digits is 207360, while the sum is 36.

Adding to 33224253642 its reverse (24635242233), we get a palindrome (57859495875).

The spelling of 33224253642 in words is "thirty-three billion, two hundred twenty-four million, two hundred fifty-three thousand, six hundred forty-two".