161416623523 has 2 divisors, whose sum is σ = 161416623524. Its totient is φ = 161416623522.

The previous prime is 161416623493. The next prime is 161416623607. The reversal of 161416623523 is 325326614161.

161416623523 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 161416623523 - 2¹⁷ = 161416492451 is a prime.

It is not a weakly prime, because it can be changed into another prime (161416123523) 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, 80708311761 + 80708311762.

It is an arithmetic number, because the mean of its divisors is an integer number (80708311762).

Almost surely, 2^161416623523 is an apocalyptic number.

161416623523 is a deficient number, since it is larger than the sum of its proper divisors (1).

161416623523 is an equidigital number, since it uses as much as digits as its factorization.

161416623523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 40.

The spelling of 161416623523 in words is "one hundred sixty-one billion, four hundred sixteen million, six hundred twenty-three thousand, five hundred twenty-three".