20520055713 has 8 divisors (see below), whose sum is σ = 27391928800. Its totient is φ = 13664109888.

The previous prime is 20520055691. The next prime is 20520055753. The reversal of 20520055713 is 31755002502.

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

It is not a de Polignac number, because 20520055713 - 2⁹ = 20520055201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20520055753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3978808 + ... + 3983961.

It is an arithmetic number, because the mean of its divisors is an integer number (3423991100).

Almost surely, 2^20520055713 is an apocalyptic number.

It is an amenable number.

20520055713 is a deficient number, since it is larger than the sum of its proper divisors (6871873087).

20520055713 is an equidigital number, since it uses as much as digits as its factorization.

20520055713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7963631.

The product of its (nonzero) digits is 10500, while the sum is 30.

The spelling of 20520055713 in words is "twenty billion, five hundred twenty million, fifty-five thousand, seven hundred thirteen".