33321903906 has 16 divisors (see below), whose sum is σ = 68793608448. Its totient is φ = 10749001200.

The previous prime is 33321903893. The next prime is 33321903907. The reversal of 33321903906 is 60930912333.

It is a happy number.

It is a super-2 number, since 2×33321903906² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33321903907) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 89574825 + ... + 89575196.

It is an arithmetic number, because the mean of its divisors is an integer number (4299600528).

Almost surely, 2^33321903906 is an apocalyptic number.

33321903906 is an abundant number, since it is smaller than the sum of its proper divisors (35471704542).

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

33321903906 is a wasteful number, since it uses less digits than its factorization.

33321903906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179150057.

The product of its (nonzero) digits is 78732, while the sum is 39.

The spelling of 33321903906 in words is "thirty-three billion, three hundred twenty-one million, nine hundred three thousand, nine hundred six".