813911828073 has 4 divisors (see below), whose sum is σ = 1085215770768. Its totient is φ = 542607885380.

The previous prime is 813911828057. The next prime is 813911828077. The reversal of 813911828073 is 370828119318.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 813911828073 - 2⁴ = 813911828057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (813911828077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135651971343 + ... + 135651971348.

It is an arithmetic number, because the mean of its divisors is an integer number (271303942692).

Almost surely, 2^813911828073 is an apocalyptic number.

It is an amenable number.

813911828073 is a deficient number, since it is larger than the sum of its proper divisors (271303942695).

813911828073 is a wasteful number, since it uses less digits than its factorization.

813911828073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271303942694.

The product of its (nonzero) digits is 580608, while the sum is 51.

The spelling of 813911828073 in words is "eight hundred thirteen billion, nine hundred eleven million, eight hundred twenty-eight thousand, seventy-three".