20462140513 has 2 divisors, whose sum is σ = 20462140514. Its totient is φ = 20462140512.

The previous prime is 20462140511. The next prime is 20462140529. The reversal of 20462140513 is 31504126402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16617272464 + 3844868049 = 128908^2 + 62007^2 .

It is a cyclic number.

It is not a de Polignac number, because 20462140513 - 2¹ = 20462140511 is a prime.

Together with 20462140511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20462140511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10231070256 + 10231070257.

It is an arithmetic number, because the mean of its divisors is an integer number (10231070257).

Almost surely, 2^20462140513 is an apocalyptic number.

It is an amenable number.

20462140513 is a deficient number, since it is larger than the sum of its proper divisors (1).

20462140513 is an equidigital number, since it uses as much as digits as its factorization.

20462140513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 20462140513 its reverse (31504126402), we get a palindrome (51966266915).

The spelling of 20462140513 in words is "twenty billion, four hundred sixty-two million, one hundred forty thousand, five hundred thirteen".