65436313513 has 8 divisors (see below), whose sum is σ = 67576642560. Its totient is φ = 63297827040.

The previous prime is 65436313471. The next prime is 65436313517. The reversal of 65436313513 is 31531363456.

It is a happy number.

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 65436313513 - 2²¹ = 65434216361 is a prime.

It is a super-3 number, since 3×65436313513³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65436313517) 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, 388273 + ... + 530686.

It is an arithmetic number, because the mean of its divisors is an integer number (8447080320).

Almost surely, 2^65436313513 is an apocalyptic number.

It is an amenable number.

65436313513 is a deficient number, since it is larger than the sum of its proper divisors (2140329047).

65436313513 is a wasteful number, since it uses less digits than its factorization.

65436313513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921287.

The product of its digits is 291600, while the sum is 40.

Adding to 65436313513 its reverse (31531363456), we get a palindrome (96967676969).

The spelling of 65436313513 in words is "sixty-five billion, four hundred thirty-six million, three hundred thirteen thousand, five hundred thirteen".