20040015552240 has 160 divisors (see below), whose sum is σ = 62450435773440. Its totient is φ = 5316000141312.

The previous prime is 20040015552203. The next prime is 20040015552317. The reversal of 20040015552240 is 4225551004002.

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 = 20040015552198 and 20040015552207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35224117 + ... + 35788523.

It is an arithmetic number, because the mean of its divisors is an integer number (390315223584).

Almost surely, 2^{20040015552240} is an apocalyptic number.

20040015552240 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 20040015552240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31225217886720).

20040015552240 is an abundant number, since it is smaller than the sum of its proper divisors (42410420221200).

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

20040015552240 is a wasteful number, since it uses less digits than its factorization.

20040015552240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565199 (or 565193 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

Adding to 20040015552240 its reverse (4225551004002), we get a palindrome (24265566556242).

The spelling of 20040015552240 in words is "twenty trillion, forty billion, fifteen million, five hundred fifty-two thousand, two hundred forty".