65675017865 has 8 divisors (see below), whose sum is σ = 83445905160. Its totient is φ = 49449425152.

The previous prime is 65675017847. The next prime is 65675017879. The reversal of 65675017865 is 56871057656.

65675017865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 25053824656 + 40621193209 = 158284^2 + 201547^2 .

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 65675017865 - 2⁸ = 65675017609 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 65675017865.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386323550 + ... + 386323719.

It is an arithmetic number, because the mean of its divisors is an integer number (10430738145).

Almost surely, 2^65675017865 is an apocalyptic number.

It is an amenable number.

65675017865 is a deficient number, since it is larger than the sum of its proper divisors (17770887295).

65675017865 is a wasteful number, since it uses less digits than its factorization.

65675017865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772647291.

The product of its (nonzero) digits is 10584000, while the sum is 56.

The spelling of 65675017865 in words is "sixty-five billion, six hundred seventy-five million, seventeen thousand, eight hundred sixty-five".