20346306506243 has 2 divisors, whose sum is σ = 20346306506244. Its totient is φ = 20346306506242.

The previous prime is 20346306506221. The next prime is 20346306506263. The reversal of 20346306506243 is 34260560364302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20346306506243 - 2⁴² = 15948259995139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20346306506194 and 20346306506203.

It is not a weakly prime, because it can be changed into another prime (20346306506203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10173153253121 + 10173153253122.

It is an arithmetic number, because the mean of its divisors is an integer number (10173153253122).

Almost surely, 2^{20346306506243} is an apocalyptic number.

20346306506243 is a deficient number, since it is larger than the sum of its proper divisors (1).

20346306506243 is an equidigital number, since it uses as much as digits as its factorization.

20346306506243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1866240, while the sum is 44.

The spelling of 20346306506243 in words is "twenty trillion, three hundred forty-six billion, three hundred six million, five hundred six thousand, two hundred forty-three".