51641326265201 has 2 divisors, whose sum is σ = 51641326265202. Its totient is φ = 51641326265200.

The previous prime is 51641326265183. The next prime is 51641326265227. The reversal of 51641326265201 is 10256262314615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50997880038400 + 643446226801 = 7141280^2 + 802151^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51641326265201 is a prime.

It is not a weakly prime, because it can be changed into another prime (51641326265261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25820663132600 + 25820663132601.

It is an arithmetic number, because the mean of its divisors is an integer number (25820663132601).

Almost surely, 2^{51641326265201} is an apocalyptic number.

It is an amenable number.

51641326265201 is a deficient number, since it is larger than the sum of its proper divisors (1).

51641326265201 is an equidigital number, since it uses as much as digits as its factorization.

51641326265201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 518400, while the sum is 44.

Adding to 51641326265201 its reverse (10256262314615), we get a palindrome (61897588579816).

The spelling of 51641326265201 in words is "fifty-one trillion, six hundred forty-one billion, three hundred twenty-six million, two hundred sixty-five thousand, two hundred one".