20620005513 has 16 divisors (see below), whose sum is σ = 27603449280. Its totient is φ = 13691716416.

The previous prime is 20620005499. The next prime is 20620005533. The reversal of 20620005513 is 31550002602.

It is not a de Polignac number, because 20620005513 - 2⁸ = 20620005257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20620005533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 848731 + ... + 872687.

It is an arithmetic number, because the mean of its divisors is an integer number (1725215580).

Almost surely, 2^20620005513 is an apocalyptic number.

It is an amenable number.

20620005513 is a deficient number, since it is larger than the sum of its proper divisors (6983443767).

20620005513 is a wasteful number, since it uses less digits than its factorization.

20620005513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25096.

The product of its (nonzero) digits is 1800, while the sum is 24.

The spelling of 20620005513 in words is "twenty billion, six hundred twenty million, five thousand, five hundred thirteen".