20005102612705 has 32 divisors (see below), whose sum is σ = 27719399473920. Its totient is φ = 13575879659520.

The previous prime is 20005102612679. The next prime is 20005102612711. The reversal of 20005102612705 is 50721620150002.

It is not a de Polignac number, because 20005102612705 - 2⁵ = 20005102612673 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112927650 + ... + 113104660.

It is an arithmetic number, because the mean of its divisors is an integer number (866231233560).

Almost surely, 2^{20005102612705} is an apocalyptic number.

It is an amenable number.

20005102612705 is a deficient number, since it is larger than the sum of its proper divisors (7714296861215).

20005102612705 is a wasteful number, since it uses less digits than its factorization.

20005102612705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210409.

The product of its (nonzero) digits is 8400, while the sum is 31.

Adding to 20005102612705 its reverse (50721620150002), we get a palindrome (70726722762707).

The spelling of 20005102612705 in words is "twenty trillion, five billion, one hundred two million, six hundred twelve thousand, seven hundred five".