20346305543237 has 2 divisors, whose sum is σ = 20346305543238. Its totient is φ = 20346305543236.

The previous prime is 20346305543189. The next prime is 20346305543251. The reversal of 20346305543237 is 73234550364302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14793939071521 + 5552366471716 = 3846289^2 + 2356346^2 .

It is a cyclic number.

It is not a de Polignac number, because 20346305543237 - 2³² = 20342010575941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20346305543191 and 20346305543200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20346305540237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10173152771618 + 10173152771619.

It is an arithmetic number, because the mean of its divisors is an integer number (10173152771619).

Almost surely, 2^{20346305543237} is an apocalyptic number.

It is an amenable number.

20346305543237 is a deficient number, since it is larger than the sum of its proper divisors (1).

20346305543237 is an equidigital number, since it uses as much as digits as its factorization.

20346305543237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5443200, while the sum is 47.

The spelling of 20346305543237 in words is "twenty trillion, three hundred forty-six billion, three hundred five million, five hundred forty-three thousand, two hundred thirty-seven".