20620334593 has 4 divisors (see below), whose sum is σ = 20832915460. Its totient is φ = 20407753728.

The previous prime is 20620334587. The next prime is 20620334599. The reversal of 20620334593 is 39543302602.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (20620334587) and next prime (20620334599).

It can be written as a sum of positive squares in 2 ways, for example, as 12622073104 + 7998261489 = 112348^2 + 89433^2 .

It is a cyclic number.

It is not a de Polignac number, because 20620334593 - 2³³ = 12030400001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20620334599) 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 3 ways as a sum of consecutive naturals, for example, 106290288 + ... + 106290481.

It is an arithmetic number, because the mean of its divisors is an integer number (5208228865).

Almost surely, 2^20620334593 is an apocalyptic number.

It is an amenable number.

20620334593 is a deficient number, since it is larger than the sum of its proper divisors (212580867).

20620334593 is an equidigital number, since it uses as much as digits as its factorization.

20620334593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212580866.

The product of its (nonzero) digits is 116640, while the sum is 37.

The spelling of 20620334593 in words is "twenty billion, six hundred twenty million, three hundred thirty-four thousand, five hundred ninety-three".