30385689680 has 30 divisors (see below), whose sum is σ = 70650353646. Its totient is φ = 12153652224.

The previous prime is 30385689679. The next prime is 30385689707. The reversal of 30385689680 is 8698658303.

It can be written as a sum of positive squares in 3 ways, for example, as 3225331264 + 27160358416 = 56792^2 + 164804^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1549376 + ... + 1568864.

Almost surely, 2^30385689680 is an apocalyptic number.

It is an amenable number.

30385689680 is an abundant number, since it is smaller than the sum of its proper divisors (40264663966).

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

30385689680 is an frugal number, since it uses more digits than its factorization.

30385689680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38991 (or 19496 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 56.

The spelling of 30385689680 in words is "thirty billion, three hundred eighty-five million, six hundred eighty-nine thousand, six hundred eighty".