65878687807 has 2 divisors, whose sum is σ = 65878687808. Its totient is φ = 65878687806.

The previous prime is 65878687753. The next prime is 65878687891. The reversal of 65878687807 is 70878687856.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65878687807 - 2¹⁵ = 65878655039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65878687307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32939343903 + 32939343904.

It is an arithmetic number, because the mean of its divisors is an integer number (32939343904).

Almost surely, 2^65878687807 is an apocalyptic number.

65878687807 is a deficient number, since it is larger than the sum of its proper divisors (1).

65878687807 is an equidigital number, since it uses as much as digits as its factorization.

65878687807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252887040, while the sum is 70.

The spelling of 65878687807 in words is "sixty-five billion, eight hundred seventy-eight million, six hundred eighty-seven thousand, eight hundred seven".