30485431680 has 128 divisors (see below), whose sum is σ = 106006233600. Its totient is φ = 7390402560.

The previous prime is 30485431621. The next prime is 30485431687. The reversal of 30485431680 is 8613458403.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30485431687) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 700600 + ... + 742839.

It is an arithmetic number, because the mean of its divisors is an integer number (828173700).

Almost surely, 2^30485431680 is an apocalyptic number.

30485431680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30485431680 is an abundant number, since it is smaller than the sum of its proper divisors (75520801920).

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

30485431680 is a wasteful number, since it uses less digits than its factorization.

30485431680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443472 (or 1443460 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 30485431680 in words is "thirty billion, four hundred eighty-five million, four hundred thirty-one thousand, six hundred eighty".