30303013215540 has 192 divisors, whose sum is σ = 94328242348032. Its totient is φ = 7218169459200.

The previous prime is 30303013215479. The next prime is 30303013215589. The reversal of 30303013215540 is 4551231030303.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 30303013215498 and 30303013215507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 715972819 + ... + 716015141.

It is an arithmetic number, because the mean of its divisors is an integer number (491292928896).

Almost surely, 2^{30303013215540} is an apocalyptic number.

30303013215540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30303013215540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47164121174016).

30303013215540 is an abundant number, since it is smaller than the sum of its proper divisors (64025229132492).

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

30303013215540 is a wasteful number, since it uses less digits than its factorization.

30303013215540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71990 (or 71988 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 30.

Adding to 30303013215540 its reverse (4551231030303), we get a palindrome (34854244245843).

The spelling of 30303013215540 in words is "thirty trillion, three hundred three billion, thirteen million, two hundred fifteen thousand, five hundred forty".