165426383851 has 2 divisors, whose sum is σ = 165426383852. Its totient is φ = 165426383850.

The previous prime is 165426383849. The next prime is 165426383873. The reversal of 165426383851 is 158383624561.

165426383851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165426383851 - 2¹ = 165426383849 is a prime.

Together with 165426383849, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (165426383951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82713191925 + 82713191926.

It is an arithmetic number, because the mean of its divisors is an integer number (82713191926).

Almost surely, 2^165426383851 is an apocalyptic number.

165426383851 is a deficient number, since it is larger than the sum of its proper divisors (1).

165426383851 is an equidigital number, since it uses as much as digits as its factorization.

165426383851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4147200, while the sum is 52.

The spelling of 165426383851 in words is "one hundred sixty-five billion, four hundred twenty-six million, three hundred eighty-three thousand, eight hundred fifty-one".