813348718828 has 12 divisors (see below), whose sum is σ = 1507087332072. Its totient is φ = 382752338240.

The previous prime is 813348718823. The next prime is 813348718829. The reversal of 813348718828 is 828817843318.

It is a happy number.

It is a super-2 number, since 2×813348718828² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (813348718823) 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, 5980505218 + ... + 5980505353.

It is an arithmetic number, because the mean of its divisors is an integer number (125590611006).

Almost surely, 2^813348718828 is an apocalyptic number.

It is an amenable number.

813348718828 is a deficient number, since it is larger than the sum of its proper divisors (693738613244).

813348718828 is a wasteful number, since it uses less digits than its factorization.

813348718828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11961010592 (or 11961010590 counting only the distinct ones).

The product of its digits is 16515072, while the sum is 61.

The spelling of 813348718828 in words is "eight hundred thirteen billion, three hundred forty-eight million, seven hundred eighteen thousand, eight hundred twenty-eight".