813202208620 has 48 divisors (see below), whose sum is σ = 1712579369760. Its totient is φ = 324357336576.

The previous prime is 813202208591. The next prime is 813202208657. The reversal of 813202208620 is 26802202318.

It is a happy number.

It is a super-2 number, since 2×813202208620² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11397216 + ... + 11468344.

It is an arithmetic number, because the mean of its divisors is an integer number (35678736870).

Almost surely, 2^813202208620 is an apocalyptic number.

It is an amenable number.

813202208620 is an abundant number, since it is smaller than the sum of its proper divisors (899377161140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

813202208620 is a wasteful number, since it uses less digits than its factorization.

813202208620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72754 (or 72752 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The spelling of 813202208620 in words is "eight hundred thirteen billion, two hundred two million, two hundred eight thousand, six hundred twenty".