30609335781220 has 96 divisors (see below), whose sum is σ = 76658389549056. Its totient is φ = 10038083721600.

The previous prime is 30609335781133. The next prime is 30609335781253. The reversal of 30609335781220 is 2218753390603.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 156816285 + ... + 157011355.

It is an arithmetic number, because the mean of its divisors is an integer number (798524891136).

Almost surely, 2^{30609335781220} is an apocalyptic number.

It is an amenable number.

30609335781220 is an abundant number, since it is smaller than the sum of its proper divisors (46049053767836).

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

30609335781220 is a wasteful number, since it uses less digits than its factorization.

30609335781220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243841 (or 243839 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 49.

The spelling of 30609335781220 in words is "thirty trillion, six hundred nine billion, three hundred thirty-five million, seven hundred eighty-one thousand, two hundred twenty".