65684130760513 has 4 divisors (see below), whose sum is σ = 65684180498260. Its totient is φ = 65684081022768.

The previous prime is 65684130760483. The next prime is 65684130760519. The reversal of 65684130760513 is 31506703148656.

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

It can be written as a sum of positive squares in 2 ways, for example, as 38495174984704 + 27188955775809 = 6204448^2 + 5214303^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65684130760513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65684130760519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22832370 + ... + 25547707.

It is an arithmetic number, because the mean of its divisors is an integer number (16421045124565).

Almost surely, 2^{65684130760513} is an apocalyptic number.

It is an amenable number.

65684130760513 is a deficient number, since it is larger than the sum of its proper divisors (49737747).

65684130760513 is a wasteful number, since it uses less digits than its factorization.

65684130760513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49737746.

The product of its (nonzero) digits is 10886400, while the sum is 55.

The spelling of 65684130760513 in words is "sixty-five trillion, six hundred eighty-four billion, one hundred thirty million, seven hundred sixty thousand, five hundred thirteen".