20884535213 has 2 divisors, whose sum is σ = 20884535214. Its totient is φ = 20884535212.

The previous prime is 20884535183. The next prime is 20884535249. The reversal of 20884535213 is 31253548802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14738445604 + 6146089609 = 121402^2 + 78397^2 .

It is a cyclic number.

It is not a de Polignac number, because 20884535213 - 2¹⁴ = 20884518829 is a prime.

It is a super-2 number, since 2×20884535213² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20884535713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10442267606 + 10442267607.

It is an arithmetic number, because the mean of its divisors is an integer number (10442267607).

Almost surely, 2^20884535213 is an apocalyptic number.

It is an amenable number.

20884535213 is a deficient number, since it is larger than the sum of its proper divisors (1).

20884535213 is an equidigital number, since it uses as much as digits as its factorization.

20884535213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 230400, while the sum is 41.

The spelling of 20884535213 in words is "twenty billion, eight hundred eighty-four million, five hundred thirty-five thousand, two hundred thirteen".