816424287843 has 16 divisors (see below), whose sum is σ = 1092951014400. Its totient is φ = 542093829024.

The previous prime is 816424287727. The next prime is 816424287851. The reversal of 816424287843 is 348782424618.

It is a Cunningham number, because it is equal to 903562²-1.

It is not a de Polignac number, because 816424287843 - 2¹⁴ = 816424271459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (816424289843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 451780 + ... + 1355342.

It is an arithmetic number, because the mean of its divisors is an integer number (68309438400).

Almost surely, 2^816424287843 is an apocalyptic number.

816424287843 is a deficient number, since it is larger than the sum of its proper divisors (276526726557).

816424287843 is a wasteful number, since it uses less digits than its factorization.

816424287843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904778.

The product of its digits is 16515072, while the sum is 57.

The spelling of 816424287843 in words is "eight hundred sixteen billion, four hundred twenty-four million, two hundred eighty-seven thousand, eight hundred forty-three".