20520566323213 has 8 divisors (see below), whose sum is σ = 22387248876096. Its totient is φ = 18654079857600.

The previous prime is 20520566323181. The next prime is 20520566323379. The reversal of 20520566323213 is 31232366502502.

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

It is not a de Polignac number, because 20520566323213 - 2⁵ = 20520566323181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20520566323813) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 48802956 + ... + 49221637.

It is an arithmetic number, because the mean of its divisors is an integer number (2798406109512).

Almost surely, 2^{20520566323213} is an apocalyptic number.

It is an amenable number.

20520566323213 is a deficient number, since it is larger than the sum of its proper divisors (1866682552883).

20520566323213 is a wasteful number, since it uses less digits than its factorization.

20520566323213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98043635.

The product of its (nonzero) digits is 388800, while the sum is 40.

The spelling of 20520566323213 in words is "twenty trillion, five hundred twenty billion, five hundred sixty-six million, three hundred twenty-three thousand, two hundred thirteen".