33638433628 has 6 divisors (see below), whose sum is σ = 58867258856. Its totient is φ = 16819216812.

The previous prime is 33638433617. The next prime is 33638433667. The reversal of 33638433628 is 82633483633.

It is a super-2 number, since 2×33638433628² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4204804200 + ... + 4204804207.

Almost surely, 2^33638433628 is an apocalyptic number.

It is an amenable number.

33638433628 is a deficient number, since it is larger than the sum of its proper divisors (25228825228).

33638433628 is a wasteful number, since it uses less digits than its factorization.

33638433628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8409608411 (or 8409608409 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 49.

The spelling of 33638433628 in words is "thirty-three billion, six hundred thirty-eight million, four hundred thirty-three thousand, six hundred twenty-eight".