136565420653 has 8 divisors (see below), whose sum is σ = 136686326040. Its totient is φ = 136444568640.

The previous prime is 136565420647. The next prime is 136565420689. The reversal of 136565420653 is 356024565631.

It can be written as a sum of positive squares in 4 ways, for example, as 125155335529 + 11410085124 = 353773^2 + 106818^2 .

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 136565420653 - 2⁹ = 136565420141 is a prime.

It is a super-2 number, since 2×136565420653² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136565420633) 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, 6395751 + ... + 6417067.

It is an arithmetic number, because the mean of its divisors is an integer number (17085790755).

Almost surely, 2^136565420653 is an apocalyptic number.

It is an amenable number.

136565420653 is a deficient number, since it is larger than the sum of its proper divisors (120905387).

136565420653 is a wasteful number, since it uses less digits than its factorization.

136565420653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26687.

The product of its (nonzero) digits is 1944000, while the sum is 46.

The spelling of 136565420653 in words is "one hundred thirty-six billion, five hundred sixty-five million, four hundred twenty thousand, six hundred fifty-three".