20335351670213 has 2 divisors, whose sum is σ = 20335351670214. Its totient is φ = 20335351670212.

The previous prime is 20335351670177. The next prime is 20335351670233. The reversal of 20335351670213 is 31207615353302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17865305667169 + 2470046003044 = 4226737^2 + 1571638^2 .

It is a cyclic number.

It is not a de Polignac number, because 20335351670213 - 2⁶ = 20335351670149 is a prime.

It is a super-2 number, since 2×20335351670213² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20335351670233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10167675835106 + 10167675835107.

It is an arithmetic number, because the mean of its divisors is an integer number (10167675835107).

Almost surely, 2^{20335351670213} is an apocalyptic number.

It is an amenable number.

20335351670213 is a deficient number, since it is larger than the sum of its proper divisors (1).

20335351670213 is an equidigital number, since it uses as much as digits as its factorization.

20335351670213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 340200, while the sum is 41.

The spelling of 20335351670213 in words is "twenty trillion, three hundred thirty-five billion, three hundred fifty-one million, six hundred seventy thousand, two hundred thirteen".