33668518442 has 16 divisors (see below), whose sum is σ = 54625116840. Its totient is φ = 15471456192.

The previous prime is 33668518427. The next prime is 33668518493. The reversal of 33668518442 is 24481586633.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20147247481 + 13521270961 = 141941^2 + 116281^2 .

It is a super-2 number, since 2×33668518442² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2821433 + ... + 2833340.

Almost surely, 2^33668518442 is an apocalyptic number.

33668518442 is a deficient number, since it is larger than the sum of its proper divisors (20956598398).

33668518442 is a wasteful number, since it uses less digits than its factorization.

33668518442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5655017.

The product of its digits is 3317760, while the sum is 50.

The spelling of 33668518442 in words is "thirty-three billion, six hundred sixty-eight million, five hundred eighteen thousand, four hundred forty-two".