835644403213 has 2 divisors, whose sum is σ = 835644403214. Its totient is φ = 835644403212.

The previous prime is 835644403189. The next prime is 835644403229. The reversal of 835644403213 is 312304446538.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 619830267849 + 215814135364 = 787293^2 + 464558^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-835644403213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 835644403213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (835642403213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 417822201606 + 417822201607.

It is an arithmetic number, because the mean of its divisors is an integer number (417822201607).

Almost surely, 2^835644403213 is an apocalyptic number.

It is an amenable number.

835644403213 is a deficient number, since it is larger than the sum of its proper divisors (1).

835644403213 is an equidigital number, since it uses as much as digits as its factorization.

835644403213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 835644403213 in words is "eight hundred thirty-five billion, six hundred forty-four million, four hundred three thousand, two hundred thirteen".