20213245836413 has 16 divisors (see below), whose sum is σ = 23713724014080. Its totient is φ = 16871994112896.

The previous prime is 20213245836397. The next prime is 20213245836517. The reversal of 20213245836413 is 31463854231202.

It is a cyclic number.

It is not a de Polignac number, because 20213245836413 - 2⁴ = 20213245836397 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 (20213245836013) by changing a digit.

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, 250315670 + ... + 250396407.

It is an arithmetic number, because the mean of its divisors is an integer number (1482107750880).

Almost surely, 2^{20213245836413} is an apocalyptic number.

It is an amenable number.

20213245836413 is a deficient number, since it is larger than the sum of its proper divisors (3500478177667).

20213245836413 is an equidigital number, since it uses as much as digits as its factorization.

20213245836413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500712236.

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 20213245836413 in words is "twenty trillion, two hundred thirteen billion, two hundred forty-five million, eight hundred thirty-six thousand, four hundred thirteen".