20040020000 has 810 divisors, whose sum is σ = 68260453569. Its totient is φ = 5765760000.

The previous prime is 20040019973. The next prime is 20040020023. The reversal of 20040020000 is 2004002.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 8 ways, for example, as 7813852816 + 12226167184 = 88396^2 + 110572^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=100100.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 20040020000.

It is an unprimeable number.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 1541539994 + ... + 1541540006.

Almost surely, 2^20040020000 is an apocalyptic number.

20040020000 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 20040020000

20040020000 is an abundant number, since it is smaller than the sum of its proper divisors (48220433569).

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

20040020000 is a wasteful number, since it uses less digits than its factorization.

20040020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 38 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 8.

Adding to 20040020000 its reverse (2004002), we get a palindrome (20042024002).

20040020000 divided by its reverse (2004002) gives a 4-th power (10000 = 10⁴).

The spelling of 20040020000 in words is "twenty billion, forty million, twenty thousand".