20750009520240 has 1920 divisors, whose sum is σ = 98038217152512. Its totient is φ = 3938632335360.

The previous prime is 20750009520239. The next prime is 20750009520263. The reversal of 20750009520240 is 4202590005702.

It is a happy number.

20750009520240 is a `hidden beast` number, since 2 + 0 + 7 + 500 + 0 + 95 + 20 + 2 + 40 = 666.

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 = 20750009520195 and 20750009520204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 1887560184 + ... + 1887571176.

Almost surely, 2^{20750009520240} is an apocalyptic number.

20750009520240 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 20750009520240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49019108576256).

20750009520240 is an abundant number, since it is smaller than the sum of its proper divisors (77288207632272).

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

20750009520240 is a wasteful number, since it uses less digits than its factorization.

20750009520240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11149 (or 11131 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

Adding to 20750009520240 its reverse (4202590005702), we get a palindrome (24952599525942).

The spelling of 20750009520240 in words is "twenty trillion, seven hundred fifty billion, nine million, five hundred twenty thousand, two hundred forty".