20243540352320 has 56 divisors (see below), whose sum is σ = 49759928245248. Its totient is φ = 7836209164800.

The previous prime is 20243540352229. The next prime is 20243540352331. The reversal of 20243540352320 is 2325304534202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1020329816 + ... + 1020349655.

Almost surely, 2^{20243540352320} is an apocalyptic number.

20243540352320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20243540352320 is an abundant number, since it is smaller than the sum of its proper divisors (29516387892928).

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

20243540352320 is a wasteful number, since it uses less digits than its factorization.

20243540352320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040679519 (or 2040679509 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 35.

Adding to 20243540352320 its reverse (2325304534202), we get a palindrome (22568844886522).

The spelling of 20243540352320 in words is "twenty trillion, two hundred forty-three billion, five hundred forty million, three hundred fifty-two thousand, three hundred twenty".