20514013213 has 4 divisors (see below), whose sum is σ = 20514349180. Its totient is φ = 20513677248.

The previous prime is 20514013211. The next prime is 20514013241. The reversal of 20514013213 is 31231041502.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 498271684 + 20015741529 = 22322^2 + 141477^2 .

It is a cyclic number.

It is not a de Polignac number, because 20514013213 - 2¹ = 20514013211 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 (20514013211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47670 + ... + 208087.

It is an arithmetic number, because the mean of its divisors is an integer number (5128587295).

Almost surely, 2^20514013213 is an apocalyptic number.

It is an amenable number.

20514013213 is a deficient number, since it is larger than the sum of its proper divisors (335967).

20514013213 is an equidigital number, since it uses as much as digits as its factorization.

20514013213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335966.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 20514013213 its reverse (31231041502), we get a palindrome (51745054715).

The spelling of 20514013213 in words is "twenty billion, five hundred fourteen million, thirteen thousand, two hundred thirteen".