843400068720 has 160 divisors (see below), whose sum is σ = 2870394140160. Its totient is φ = 203158225920.

The previous prime is 843400068691. The next prime is 843400068743. The reversal of 843400068720 is 27860004348.

It is a super-2 number, since 2×843400068720² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 602940 + ... + 1431899.

It is an arithmetic number, because the mean of its divisors is an integer number (17939963376).

Almost surely, 2^843400068720 is an apocalyptic number.

843400068720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

843400068720 is an abundant number, since it is smaller than the sum of its proper divisors (2026994071440).

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

843400068720 is a wasteful number, since it uses less digits than its factorization.

843400068720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2035023 (or 2035017 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 42.

The spelling of 843400068720 in words is "eight hundred forty-three billion, four hundred million, sixty-eight thousand, seven hundred twenty".