20124504033240 has 32 divisors (see below), whose sum is σ = 60373512100080. Its totient is φ = 5366534408832.

The previous prime is 20124504033223. The next prime is 20124504033247. The reversal of 20124504033240 is 4233040542102.

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 = 20124504033198 and 20124504033207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20124504033247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83852100019 + ... + 83852100258.

Almost surely, 2^{20124504033240} is an apocalyptic number.

20124504033240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20124504033240 is an abundant number, since it is smaller than the sum of its proper divisors (40249008066840).

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

20124504033240 is a wasteful number, since it uses less digits than its factorization.

20124504033240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167704200291 (or 167704200287 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 20124504033240 its reverse (4233040542102), we get a palindrome (24357544575342).

The spelling of 20124504033240 in words is "twenty trillion, one hundred twenty-four billion, five hundred four million, thirty-three thousand, two hundred forty".