65600500605091 has 2 divisors, whose sum is σ = 65600500605092. Its totient is φ = 65600500605090.

The previous prime is 65600500605023. The next prime is 65600500605239. The reversal of 65600500605091 is 19050600500656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65600500605091 - 2²¹ = 65600498507939 is a prime.

It is not a weakly prime, because it can be changed into another prime (65600500605391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32800250302545 + 32800250302546.

It is an arithmetic number, because the mean of its divisors is an integer number (32800250302546).

Almost surely, 2^{65600500605091} is an apocalyptic number.

65600500605091 is a deficient number, since it is larger than the sum of its proper divisors (1).

65600500605091 is an equidigital number, since it uses as much as digits as its factorization.

65600500605091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 243000, while the sum is 43.

The spelling of 65600500605091 in words is "sixty-five trillion, six hundred billion, five hundred million, six hundred five thousand, ninety-one".