2106504420875 has 8 divisors (see below), whose sum is σ = 2628917517408. Its totient is φ = 1685203536600.

The previous prime is 2106504420847. The next prime is 2106504420967. The reversal of 2106504420875 is 5780244056012.

It is not a de Polignac number, because 2106504420875 - 2²⁸ = 2106235985419 is a prime.

It is a Duffinian number.

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, 8426017559 + ... + 8426017808.

It is an arithmetic number, because the mean of its divisors is an integer number (328614689676).

Almost surely, 2^{2106504420875} is an apocalyptic number.

2106504420875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2106504420875 is a deficient number, since it is larger than the sum of its proper divisors (522413096533).

2106504420875 is an equidigital number, since it uses as much as digits as its factorization.

2106504420875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16852035382 (or 16852035372 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 44.

Adding to 2106504420875 its reverse (5780244056012), we get a palindrome (7886748476887).

The spelling of 2106504420875 in words is "two trillion, one hundred six billion, five hundred four million, four hundred twenty thousand, eight hundred seventy-five".