65217117070157 has 8 divisors (see below), whose sum is σ = 70410729770136. Its totient is φ = 60048777425472.

The previous prime is 65217117070141. The next prime is 65217117070169. The reversal of 65217117070157 is 75107071171256.

It can be written as a sum of positive squares in 4 ways, for example, as 155889939241 + 65061227130916 = 394829^2 + 8066054^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65217117070157 - 2⁴ = 65217117070141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65217117370157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6318258458 + ... + 6318268779.

It is an arithmetic number, because the mean of its divisors is an integer number (8801341221267).

Almost surely, 2^{65217117070157} is an apocalyptic number.

It is an amenable number.

65217117070157 is a deficient number, since it is larger than the sum of its proper divisors (5193612699979).

65217117070157 is a wasteful number, since it uses less digits than its factorization.

65217117070157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12636527647.

The product of its (nonzero) digits is 720300, while the sum is 50.

The spelling of 65217117070157 in words is "sixty-five trillion, two hundred seventeen billion, one hundred seventeen million, seventy thousand, one hundred fifty-seven".