33081580820 has 24 divisors (see below), whose sum is σ = 70422984744. Its totient is φ = 13051362816.

The previous prime is 33081580799. The next prime is 33081580837. The reversal of 33081580820 is 2808518033.

It can be written as a sum of positive squares in 4 ways, for example, as 150945796 + 32930635024 = 12286^2 + 181468^2 .

It is a congruent number.

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, 11327849 + ... + 11330768.

It is an arithmetic number, because the mean of its divisors is an integer number (2934291031).

Almost surely, 2^33081580820 is an apocalyptic number.

It is an amenable number.

33081580820 is an abundant number, since it is smaller than the sum of its proper divisors (37341403924).

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

33081580820 is a wasteful number, since it uses less digits than its factorization.

33081580820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22658699 (or 22658697 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The spelling of 33081580820 in words is "thirty-three billion, eighty-one million, five hundred eighty thousand, eight hundred twenty".