33330161920 has 216 divisors, whose sum is σ = 92529819648. Its totient is φ = 11405721600.

The previous prime is 33330161911. The next prime is 33330161929. The reversal of 33330161920 is 2916103333.

It is an interprime number because it is at equal distance from previous prime (33330161911) and next prime (33330161929).

It is a super-2 number, since 2×33330161920² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33330161929) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4065025 + ... + 4073215.

Almost surely, 2^33330161920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33330161920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46264909824).

33330161920 is an abundant number, since it is smaller than the sum of its proper divisors (59199657728).

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

33330161920 is a wasteful number, since it uses less digits than its factorization.

33330161920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8257 (or 8226 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 31.

The spelling of 33330161920 in words is "thirty-three billion, three hundred thirty million, one hundred sixty-one thousand, nine hundred twenty".