20205220039 has 2 divisors, whose sum is σ = 20205220040. Its totient is φ = 20205220038.

The previous prime is 20205220037. The next prime is 20205220153. The reversal of 20205220039 is 93002250202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20205220039 - 2¹ = 20205220037 is a prime.

Together with 20205220037, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 20205219995 and 20205220022.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20205220037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10102610019 + 10102610020.

It is an arithmetic number, because the mean of its divisors is an integer number (10102610020).

Almost surely, 2^20205220039 is an apocalyptic number.

20205220039 is a deficient number, since it is larger than the sum of its proper divisors (1).

20205220039 is an equidigital number, since it uses as much as digits as its factorization.

20205220039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

The spelling of 20205220039 in words is "twenty billion, two hundred five million, two hundred twenty thousand, thirty-nine".