20620104443 has 2 divisors, whose sum is σ = 20620104444. Its totient is φ = 20620104442.

The previous prime is 20620104431. The next prime is 20620104473. The reversal of 20620104443 is 34440102602.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20620104443 is a prime.

It is not a weakly prime, because it can be changed into another prime (20620104473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10310052221 + 10310052222.

It is an arithmetic number, because the mean of its divisors is an integer number (10310052222).

Almost surely, 2^20620104443 is an apocalyptic number.

20620104443 is a deficient number, since it is larger than the sum of its proper divisors (1).

20620104443 is an equidigital number, since it uses as much as digits as its factorization.

20620104443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 26.

The spelling of 20620104443 in words is "twenty billion, six hundred twenty million, one hundred four thousand, four hundred forty-three".