20837050513 has 2 divisors, whose sum is σ = 20837050514. Its totient is φ = 20837050512.

The previous prime is 20837050471. The next prime is 20837050517. The reversal of 20837050513 is 31505073802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20207191104 + 629859409 = 142152^2 + 25097^2 .

It is a cyclic number.

It is not a de Polignac number, because 20837050513 - 2¹³ = 20837042321 is a prime.

It is not a weakly prime, because it can be changed into another prime (20837050517) 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, 10418525256 + 10418525257.

It is an arithmetic number, because the mean of its divisors is an integer number (10418525257).

Almost surely, 2^20837050513 is an apocalyptic number.

It is an amenable number.

20837050513 is a deficient number, since it is larger than the sum of its proper divisors (1).

20837050513 is an equidigital number, since it uses as much as digits as its factorization.

20837050513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 34.

The spelling of 20837050513 in words is "twenty billion, eight hundred thirty-seven million, fifty thousand, five hundred thirteen".