20512442143005 has 32 divisors (see below), whose sum is σ = 32868916715520. Its totient is φ = 10923634182720.

The previous prime is 20512442143001. The next prime is 20512442143021. The reversal of 20512442143005 is 50034124421502.

It is not a de Polignac number, because 20512442143005 - 2² = 20512442143001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20512442143001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 370614364 + ... + 370669706.

It is an arithmetic number, because the mean of its divisors is an integer number (1027153647360).

Almost surely, 2^{20512442143005} is an apocalyptic number.

It is an amenable number.

20512442143005 is a deficient number, since it is larger than the sum of its proper divisors (12356474572515).

20512442143005 is a wasteful number, since it uses less digits than its factorization.

20512442143005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91801.

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 20512442143005 its reverse (50034124421502), we get a palindrome (70546566564507).

The spelling of 20512442143005 in words is "twenty trillion, five hundred twelve billion, four hundred forty-two million, one hundred forty-three thousand, five".