653506106352613 has 4 divisors (see below), whose sum is σ = 660848871592620. Its totient is φ = 646163341112608.

The previous prime is 653506106352601. The next prime is 653506106352661. The reversal of 653506106352613 is 316253601605356.

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 70101887599969 + 583404218752644 = 8372687^2 + 24153762^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-653506106352613 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 (653506106352683) 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, 3671382619870 + ... + 3671382620047.

It is an arithmetic number, because the mean of its divisors is an integer number (165212217898155).

Almost surely, 2^{653506106352613} is an apocalyptic number.

It is an amenable number.

653506106352613 is a deficient number, since it is larger than the sum of its proper divisors (7342765240007).

653506106352613 is an equidigital number, since it uses as much as digits as its factorization.

653506106352613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7342765240006.

The product of its (nonzero) digits is 8748000, while the sum is 52.

Adding to 653506106352613 its reverse (316253601605356), we get a palindrome (969759707957969).

The spelling of 653506106352613 in words is "six hundred fifty-three trillion, five hundred six billion, one hundred six million, three hundred fifty-two thousand, six hundred thirteen".