20512112005003 has 8 divisors (see below), whose sum is σ = 20652902693696. Its totient is φ = 20371623120000.

The previous prime is 20512112004977. The next prime is 20512112005039. The reversal of 20512112005003 is 30050021121502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20512112005003 - 2¹³ = 20512111996811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20512112003003) 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, 75314526 + ... + 75586387.

It is an arithmetic number, because the mean of its divisors is an integer number (2581612836712).

Almost surely, 2^{20512112005003} is an apocalyptic number.

20512112005003 is a deficient number, since it is larger than the sum of its proper divisors (140790688693).

20512112005003 is a wasteful number, since it uses less digits than its factorization.

20512112005003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150901845.

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 20512112005003 its reverse (30050021121502), we get a palindrome (50562133126505).

The spelling of 20512112005003 in words is "twenty trillion, five hundred twelve billion, one hundred twelve million, five thousand, three".