20620512343 has 2 divisors, whose sum is σ = 20620512344. Its totient is φ = 20620512342.

The previous prime is 20620512307. The next prime is 20620512377. The reversal of 20620512343 is 34321502602.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20620512343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20620512643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10310256171 + 10310256172.

It is an arithmetic number, because the mean of its divisors is an integer number (10310256172).

Almost surely, 2^20620512343 is an apocalyptic number.

20620512343 is a deficient number, since it is larger than the sum of its proper divisors (1).

20620512343 is an equidigital number, since it uses as much as digits as its factorization.

20620512343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 28.

The spelling of 20620512343 in words is "twenty billion, six hundred twenty million, five hundred twelve thousand, three hundred forty-three".