20305340055313 has 2 divisors, whose sum is σ = 20305340055314. Its totient is φ = 20305340055312.

The previous prime is 20305340055307. The next prime is 20305340055359. The reversal of 20305340055313 is 31355004350302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19430922434704 + 874417620609 = 4408052^2 + 935103^2 .

It is a cyclic number.

It is not a de Polignac number, because 20305340055313 - 2⁵ = 20305340055281 is a prime.

It is not a weakly prime, because it can be changed into another prime (20305340055713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10152670027656 + 10152670027657.

It is an arithmetic number, because the mean of its divisors is an integer number (10152670027657).

Almost surely, 2^{20305340055313} is an apocalyptic number.

It is an amenable number.

20305340055313 is a deficient number, since it is larger than the sum of its proper divisors (1).

20305340055313 is an equidigital number, since it uses as much as digits as its factorization.

20305340055313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81000, while the sum is 34.

The spelling of 20305340055313 in words is "twenty trillion, three hundred five billion, three hundred forty million, fifty-five thousand, three hundred thirteen".