65172487078807 has 2 divisors, whose sum is σ = 65172487078808. Its totient is φ = 65172487078806.

The previous prime is 65172487078801. The next prime is 65172487078817. The reversal of 65172487078807 is 70887078427156.

65172487078807 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65172487078807 - 2⁷ = 65172487078679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65172487078801) 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, 32586243539403 + 32586243539404.

It is an arithmetic number, because the mean of its divisors is an integer number (32586243539404).

Almost surely, 2^{65172487078807} is an apocalyptic number.

65172487078807 is a deficient number, since it is larger than the sum of its proper divisors (1).

65172487078807 is an equidigital number, since it uses as much as digits as its factorization.

65172487078807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 295034880, while the sum is 70.

The spelling of 65172487078807 in words is "sixty-five trillion, one hundred seventy-two billion, four hundred eighty-seven million, seventy-eight thousand, eight hundred seven".