65966955767 has 2 divisors, whose sum is σ = 65966955768. Its totient is φ = 65966955766.

The previous prime is 65966955751. The next prime is 65966955853. The reversal of 65966955767 is 76755966956.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65966955767 - 2⁴ = 65966955751 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65966955767.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65966955727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32983477883 + 32983477884.

It is an arithmetic number, because the mean of its divisors is an integer number (32983477884).

Almost surely, 2^65966955767 is an apocalyptic number.

65966955767 is a deficient number, since it is larger than the sum of its proper divisors (1).

65966955767 is an equidigital number, since it uses as much as digits as its factorization.

65966955767 is an evil number, because the sum of its binary digits is even.

The product of its digits is 642978000, while the sum is 71.

The spelling of 65966955767 in words is "sixty-five billion, nine hundred sixty-six million, nine hundred fifty-five thousand, seven hundred sixty-seven".