20420023300049 has 2 divisors, whose sum is σ = 20420023300050. Its totient is φ = 20420023300048.

The previous prime is 20420023299989. The next prime is 20420023300073. The reversal of 20420023300049 is 94000332002402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20261089517824 + 158933782225 = 4501232^2 + 398665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20420023300049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20420023299994 and 20420023300030.

It is not a weakly prime, because it can be changed into another prime (20420023308049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10210011650024 + 10210011650025.

It is an arithmetic number, because the mean of its divisors is an integer number (10210011650025).

Almost surely, 2^{20420023300049} is an apocalyptic number.

It is an amenable number.

20420023300049 is a deficient number, since it is larger than the sum of its proper divisors (1).

20420023300049 is an equidigital number, since it uses as much as digits as its factorization.

20420023300049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 29.

The spelling of 20420023300049 in words is "twenty trillion, four hundred twenty billion, twenty-three million, three hundred thousand, forty-nine".