813648755011 has 4 divisors (see below), whose sum is σ = 813658889800. Its totient is φ = 813638620224.

The previous prime is 813648754999. The next prime is 813648755063. The reversal of 813648755011 is 110557846318.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 813648755011 - 2⁵ = 813648754979 is a prime.

It is a super-2 number, since 2×813648755011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (813648755071) 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, 4946001 + ... + 5107858.

It is an arithmetic number, because the mean of its divisors is an integer number (203414722450).

Almost surely, 2^813648755011 is an apocalyptic number.

813648755011 is a deficient number, since it is larger than the sum of its proper divisors (10134789).

813648755011 is a wasteful number, since it uses less digits than its factorization.

813648755011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10134788.

The product of its (nonzero) digits is 806400, while the sum is 49.

The spelling of 813648755011 in words is "eight hundred thirteen billion, six hundred forty-eight million, seven hundred fifty-five thousand, eleven".