810436371968 has 80 divisors (see below), whose sum is σ = 1692399804480. Its totient is φ = 387211001856.

The previous prime is 810436371949. The next prime is 810436371989. The reversal of 810436371968 is 869173634018.

It is a super-2 number, since 2×810436371968² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1158905 + ... + 1721607.

It is an arithmetic number, because the mean of its divisors is an integer number (21154997556).

Almost surely, 2^810436371968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 810436371968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (846199902240).

810436371968 is an abundant number, since it is smaller than the sum of its proper divisors (881963432512).

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

810436371968 is an equidigital number, since it uses as much as digits as its factorization.

810436371968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562847 (or 562831 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 56.

The spelling of 810436371968 in words is "eight hundred ten billion, four hundred thirty-six million, three hundred seventy-one thousand, nine hundred sixty-eight".