20510322254255 has 4 divisors (see below), whose sum is σ = 24612386705112. Its totient is φ = 16408257803400.

The previous prime is 20510322254209. The next prime is 20510322254269. The reversal of 20510322254255 is 55245222301502.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20510322254255 - 2⁴⁰ = 19410810626479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2051032225421 + ... + 2051032225430.

It is an arithmetic number, because the mean of its divisors is an integer number (6153096676278).

Almost surely, 2^{20510322254255} is an apocalyptic number.

20510322254255 is a deficient number, since it is larger than the sum of its proper divisors (4102064450857).

20510322254255 is an equidigital number, since it uses as much as digits as its factorization.

20510322254255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4102064450856.

The product of its (nonzero) digits is 240000, while the sum is 38.

Adding to 20510322254255 its reverse (55245222301502), we get a palindrome (75755544555757).

The spelling of 20510322254255 in words is "twenty trillion, five hundred ten billion, three hundred twenty-two million, two hundred fifty-four thousand, two hundred fifty-five".