65759790234991 has 2 divisors, whose sum is σ = 65759790234992. Its totient is φ = 65759790234990.

The previous prime is 65759790234979. The next prime is 65759790234997. The reversal of 65759790234991 is 19943209795756.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65759790234991 - 2⁷ = 65759790234863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65759790234997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32879895117495 + 32879895117496.

It is an arithmetic number, because the mean of its divisors is an integer number (32879895117496).

Almost surely, 2^{65759790234991} is an apocalyptic number.

65759790234991 is a deficient number, since it is larger than the sum of its proper divisors (1).

65759790234991 is an equidigital number, since it uses as much as digits as its factorization.

65759790234991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1157360400, while the sum is 76.

The spelling of 65759790234991 in words is "sixty-five trillion, seven hundred fifty-nine billion, seven hundred ninety million, two hundred thirty-four thousand, nine hundred ninety-one".