20440512052000 has 48 divisors (see below), whose sum is σ = 50222338121592. Its totient is φ = 8176204819200.

The previous prime is 20440512051997. The next prime is 20440512052021. The reversal of 20440512052000 is 25021504402.

It can be written as a sum of positive squares in 4 ways, for example, as 1995789100176 + 18444722951824 = 1412724^2 + 4294732^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

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 7 ways as a sum of consecutive naturals, for example, 2555060007 + ... + 2555068006.

Almost surely, 2^{20440512052000} is an apocalyptic number.

20440512052000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20440512052000 is an abundant number, since it is smaller than the sum of its proper divisors (29781826069592).

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

20440512052000 is an equidigital number, since it uses as much as digits as its factorization.

20440512052000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5110128038 (or 5110128020 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 20440512052000 its reverse (25021504402), we get a palindrome (20465533556402).

The spelling of 20440512052000 in words is "twenty trillion, four hundred forty billion, five hundred twelve million, fifty-two thousand".