65440710415079 has 4 divisors (see below), whose sum is σ = 65440833264840. Its totient is φ = 65440587565320.

The previous prime is 65440710415043. The next prime is 65440710415139. The reversal of 65440710415079 is 97051401704456.

65440710415079 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65440710415079 - 2⁸ = 65440710414823 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65440710415079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65440710415009) 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 in 3 ways as a sum of consecutive naturals, for example, 60622352 + ... + 61692389.

It is an arithmetic number, because the mean of its divisors is an integer number (16360208316210).

Almost surely, 2^{65440710415079} is an apocalyptic number.

65440710415079 is a deficient number, since it is larger than the sum of its proper divisors (122849761).

65440710415079 is a wasteful number, since it uses less digits than its factorization.

65440710415079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122849760.

The product of its (nonzero) digits is 4233600, while the sum is 53.

The spelling of 65440710415079 in words is "sixty-five trillion, four hundred forty billion, seven hundred ten million, four hundred fifteen thousand, seventy-nine".