20301252432640 has 144 divisors (see below), whose sum is σ = 49712738181120. Its totient is φ = 7939681136640.

The previous prime is 20301252432631. The next prime is 20301252432667. The reversal of 20301252432640 is 4623425210302.

It is a junction number, because it is equal to n+sod(n) for n = 20301252432596 and 20301252432605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59448301 + ... + 59788819.

It is an arithmetic number, because the mean of its divisors is an integer number (345227348480).

Almost surely, 2^{20301252432640} is an apocalyptic number.

20301252432640 is a gapful number since it is divisible by the number (20) 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 20301252432640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24856369090560).

20301252432640 is an abundant number, since it is smaller than the sum of its proper divisors (29411485748480).

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

20301252432640 is an equidigital number, since it uses as much as digits as its factorization.

20301252432640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341578 (or 341564 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 20301252432640 its reverse (4623425210302), we get a palindrome (24924677642942).

The spelling of 20301252432640 in words is "twenty trillion, three hundred one billion, two hundred fifty-two million, four hundred thirty-two thousand, six hundred forty".