65550667262497 has 2 divisors, whose sum is σ = 65550667262498. Its totient is φ = 65550667262496.

The previous prime is 65550667262447. The next prime is 65550667262567. The reversal of 65550667262497 is 79426276605556.

65550667262497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (65550667262567) can be obtained adding 65550667262497 to its sum of digits (70).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60877305316881 + 4673361945616 = 7802391^2 + 2161796^2 .

It is a cyclic number.

It is not a de Polignac number, because 65550667262497 - 2⁷ = 65550667262369 is a prime.

It is not a weakly prime, because it can be changed into another prime (65550667262447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32775333631248 + 32775333631249.

It is an arithmetic number, because the mean of its divisors is an integer number (32775333631249).

Almost surely, 2^{65550667262497} is an apocalyptic number.

It is an amenable number.

65550667262497 is a deficient number, since it is larger than the sum of its proper divisors (1).

65550667262497 is an equidigital number, since it uses as much as digits as its factorization.

65550667262497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1143072000, while the sum is 70.

The spelling of 65550667262497 in words is "sixty-five trillion, five hundred fifty billion, six hundred sixty-seven million, two hundred sixty-two thousand, four hundred ninety-seven".