20612102344243 has 2 divisors, whose sum is σ = 20612102344244. Its totient is φ = 20612102344242.

The previous prime is 20612102344237. The next prime is 20612102344261. The reversal of 20612102344243 is 34244320121602.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20612102344243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20612102344199 and 20612102344208.

It is not a weakly prime, because it can be changed into another prime (20612102344643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10306051172121 + 10306051172122.

It is an arithmetic number, because the mean of its divisors is an integer number (10306051172122).

Almost surely, 2^{20612102344243} is an apocalyptic number.

20612102344243 is a deficient number, since it is larger than the sum of its proper divisors (1).

20612102344243 is an equidigital number, since it uses as much as digits as its factorization.

20612102344243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 20612102344243 its reverse (34244320121602), we get a palindrome (54856422465845).

The spelling of 20612102344243 in words is "twenty trillion, six hundred twelve billion, one hundred two million, three hundred forty-four thousand, two hundred forty-three".