809858411450 has 24 divisors (see below), whose sum is σ = 1643276341440. Its totient is φ = 294493967600.

The previous prime is 809858411441. The next prime is 809858411543. The reversal of 809858411450 is 54114858908.

It is a super-2 number, since 2×809858411450² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 809858411392 and 809858411401.

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 11 ways as a sum of consecutive naturals, for example, 736234370 + ... + 736235469.

It is an arithmetic number, because the mean of its divisors is an integer number (68469847560).

Almost surely, 2^809858411450 is an apocalyptic number.

809858411450 is an abundant number, since it is smaller than the sum of its proper divisors (833417929990).

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

809858411450 is a wasteful number, since it uses less digits than its factorization.

809858411450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472469862 (or 1472469857 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 53.

The spelling of 809858411450 in words is "eight hundred nine billion, eight hundred fifty-eight million, four hundred eleven thousand, four hundred fifty".