64600226638861 has 4 divisors (see below), whose sum is σ = 64600288349212. Its totient is φ = 64600164928512.

The previous prime is 64600226638811. The next prime is 64600226638921. The reversal of 64600226638861 is 16883662200646.

64600226638861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51699695062500 + 12900531576361 = 7190250^2 + 3591731^2 .

It is a cyclic number.

It is not a de Polignac number, because 64600226638861 - 2²⁵ = 64600193084429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64600226638796 and 64600226638805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64600226638811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29257350 + ... + 31387783.

It is an arithmetic number, because the mean of its divisors is an integer number (16150072087303).

Almost surely, 2^{64600226638861} is an apocalyptic number.

It is an amenable number.

64600226638861 is a deficient number, since it is larger than the sum of its proper divisors (61710351).

64600226638861 is a wasteful number, since it uses less digits than its factorization.

64600226638861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61710350.

The product of its (nonzero) digits is 23887872, while the sum is 58.

The spelling of 64600226638861 in words is "sixty-four trillion, six hundred billion, two hundred twenty-six million, six hundred thirty-eight thousand, eight hundred sixty-one".