840008480851 has 2 divisors, whose sum is σ = 840008480852. Its totient is φ = 840008480850.

The previous prime is 840008480827. The next prime is 840008480867. The reversal of 840008480851 is 158084800048.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 840008480851 - 2³⁷ = 702569527379 is a prime.

It is a super-2 number, since 2×840008480851² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (840008480891) by changing a digit.

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 as a sum of consecutive naturals, namely, 420004240425 + 420004240426.

It is an arithmetic number, because the mean of its divisors is an integer number (420004240426).

Almost surely, 2^840008480851 is an apocalyptic number.

840008480851 is a deficient number, since it is larger than the sum of its proper divisors (1).

840008480851 is an equidigital number, since it uses as much as digits as its factorization.

840008480851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 327680, while the sum is 46.

The spelling of 840008480851 in words is "eight hundred forty billion, eight million, four hundred eighty thousand, eight hundred fifty-one".