33403404040 has 32 divisors (see below), whose sum is σ = 79578699480. Its totient is φ = 12575398912.

The previous prime is 33403404037. The next prime is 33403404079. The reversal of 33403404040 is 4040430433.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 28709235844 + 4694168196 = 169438^2 + 68514^2 .

It is a super-2 number, since 2×33403404040² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33403403996 and 33403404014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24560647 + ... + 24562006.

Almost surely, 2^33403404040 is an apocalyptic number.

It is an amenable number.

33403404040 is an abundant number, since it is smaller than the sum of its proper divisors (46175295440).

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

33403404040 is a wasteful number, since it uses less digits than its factorization.

33403404040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49122681 (or 49122677 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 25.

Adding to 33403404040 its reverse (4040430433), we get a palindrome (37443834473).

The spelling of 33403404040 in words is "thirty-three billion, four hundred three million, four hundred four thousand, forty".