20433433240440 has 256 divisors, whose sum is σ = 78214099392000. Its totient is φ = 4692845859840.

The previous prime is 20433433240439. The next prime is 20433433240471. The reversal of 20433433240440 is 4404233433402.

20433433240440 is a `hidden beast` number, since 204 + 3 + 3 + 4 + 3 + 3 + 2 + 4 + 0 + 440 = 666.

20433433240440 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 20433433240395 and 20433433240404.

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, 45037069 + ... + 45488508.

It is an arithmetic number, because the mean of its divisors is an integer number (305523825750).

Almost surely, 2^{20433433240440} is an apocalyptic number.

20433433240440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20433433240440 is an abundant number, since it is smaller than the sum of its proper divisors (57780666151560).

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

20433433240440 is a wasteful number, since it uses less digits than its factorization.

20433433240440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90525627 (or 90525617 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 36.

Adding to 20433433240440 its reverse (4404233433402), we get a palindrome (24837666673842).

The spelling of 20433433240440 in words is "twenty trillion, four hundred thirty-three billion, four hundred thirty-three million, two hundred forty thousand, four hundred forty".