20346643241297 has 2 divisors, whose sum is σ = 20346643241298. Its totient is φ = 20346643241296.

The previous prime is 20346643241263. The next prime is 20346643241333. The reversal of 20346643241297 is 79214234664302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11347459222801 + 8999184018496 = 3368599^2 + 2999864^2 .

It is a cyclic number.

It is not a de Polignac number, because 20346643241297 - 2¹⁸ = 20346642979153 is a prime.

It is not a weakly prime, because it can be changed into another prime (20346643247297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10173321620648 + 10173321620649.

It is an arithmetic number, because the mean of its divisors is an integer number (10173321620649).

Almost surely, 2^{20346643241297} is an apocalyptic number.

It is an amenable number.

20346643241297 is a deficient number, since it is larger than the sum of its proper divisors (1).

20346643241297 is an equidigital number, since it uses as much as digits as its factorization.

20346643241297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10450944, while the sum is 53.

The spelling of 20346643241297 in words is "twenty trillion, three hundred forty-six billion, six hundred forty-three million, two hundred forty-one thousand, two hundred ninety-seven".