843920259145 has 12 divisors (see below), whose sum is σ = 1075779321804. Its totient is φ = 635422311680.

The previous prime is 843920259137. The next prime is 843920259157. The reversal of 843920259145 is 541952029348.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 143101810944 + 700818448201 = 378288^2 + 837149^2 .

It is not a de Polignac number, because 843920259145 - 2³ = 843920259137 is a prime.

It is a super-2 number, since 2×843920259145² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 843920259092 and 843920259101.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 292012486 + ... + 292015375.

It is an arithmetic number, because the mean of its divisors is an integer number (89648276817).

Almost surely, 2^843920259145 is an apocalyptic number.

843920259145 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

843920259145 is a deficient number, since it is larger than the sum of its proper divisors (231859062659).

843920259145 is a wasteful number, since it uses less digits than its factorization.

843920259145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584027900 (or 584027883 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 52.

The spelling of 843920259145 in words is "eight hundred forty-three billion, nine hundred twenty million, two hundred fifty-nine thousand, one hundred forty-five".