64600261241 has 4 divisors (see below), whose sum is σ = 64758208500. Its totient is φ = 64442313984.

The previous prime is 64600261199. The next prime is 64600261261. The reversal of 64600261241 is 14216200646.

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 54384105616 + 10216155625 = 233204^2 + 101075^2 .

It is a cyclic number.

It is not a de Polignac number, because 64600261241 - 2¹⁰ = 64600260217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64600261198 and 64600261207.

It is not an unprimeable number, because it can be changed into a prime (64600261261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78973016 + ... + 78973833.

It is an arithmetic number, because the mean of its divisors is an integer number (16189552125).

Almost surely, 2^64600261241 is an apocalyptic number.

It is an amenable number.

64600261241 is a deficient number, since it is larger than the sum of its proper divisors (157947259).

64600261241 is a wasteful number, since it uses less digits than its factorization.

64600261241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157947258.

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 64600261241 its reverse (14216200646), we get a palindrome (78816461887).

The spelling of 64600261241 in words is "sixty-four billion, six hundred million, two hundred sixty-one thousand, two hundred forty-one".