33421021616 has 40 divisors (see below), whose sum is σ = 68710584384. Its totient is φ = 15693511680.

The previous prime is 33421021597. The next prime is 33421021643. The reversal of 33421021616 is 61612012433.

It is a super-2 number, since 2×33421021616² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6755 + ... + 258626.

Almost surely, 2^33421021616 is an apocalyptic number.

It is an amenable number.

33421021616 is an abundant number, since it is smaller than the sum of its proper divisors (35289562768).

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

33421021616 is a wasteful number, since it uses less digits than its factorization.

33421021616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265869 (or 265863 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The spelling of 33421021616 in words is "thirty-three billion, four hundred twenty-one million, twenty-one thousand, six hundred sixteen".