20520050312255 has 16 divisors (see below), whose sum is σ = 26518528475040. Its totient is φ = 15153091003008.

The previous prime is 20520050312231. The next prime is 20520050312261. The reversal of 20520050312255 is 55221305002502.

It is a cyclic number.

It is not a de Polignac number, because 20520050312255 - 2¹² = 20520050308159 is a prime.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 3903989 + ... + 7502081.

It is an arithmetic number, because the mean of its divisors is an integer number (1657408029690).

Almost surely, 2^{20520050312255} is an apocalyptic number.

20520050312255 is a deficient number, since it is larger than the sum of its proper divisors (5998478162785).

20520050312255 is a wasteful number, since it uses less digits than its factorization.

20520050312255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3685850.

The product of its (nonzero) digits is 30000, while the sum is 32.

Adding to 20520050312255 its reverse (55221305002502), we get a palindrome (75741355314757).

The spelling of 20520050312255 in words is "twenty trillion, five hundred twenty billion, fifty million, three hundred twelve thousand, two hundred fifty-five".