20243043312240 has 80 divisors (see below), whose sum is σ = 71718210597888. Its totient is φ = 4626981328128.

The previous prime is 20243043312113. The next prime is 20243043312251. The reversal of 20243043312240 is 4221334034202.

20243043312240 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

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 = 20243043312198 and 20243043312207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6024713592 + ... + 6024716951.

Almost surely, 2^{20243043312240} is an apocalyptic number.

20243043312240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20243043312240 is an abundant number, since it is smaller than the sum of its proper divisors (51475167285648).

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

20243043312240 is a wasteful number, since it uses less digits than its factorization.

20243043312240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12049430566 (or 12049430560 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 20243043312240 its reverse (4221334034202), we get a palindrome (24464377346442).

The spelling of 20243043312240 in words is "twenty trillion, two hundred forty-three billion, forty-three million, three hundred twelve thousand, two hundred forty".