65506071707015 has 4 divisors (see below), whose sum is σ = 78607286048424. Its totient is φ = 52404857365608.

The previous prime is 65506071707009. The next prime is 65506071707029. The reversal of 65506071707015 is 51070717060556.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65506071707015 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6550607170697 + ... + 6550607170706.

It is an arithmetic number, because the mean of its divisors is an integer number (19651821512106).

Almost surely, 2^{65506071707015} is an apocalyptic number.

65506071707015 is a deficient number, since it is larger than the sum of its proper divisors (13101214341409).

65506071707015 is a wasteful number, since it uses less digits than its factorization.

65506071707015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13101214341408.

The product of its (nonzero) digits is 1543500, while the sum is 50.

The spelling of 65506071707015 in words is "sixty-five trillion, five hundred six billion, seventy-one million, seven hundred seven thousand, fifteen".