163558403623 has 2 divisors, whose sum is σ = 163558403624. Its totient is φ = 163558403622.

The previous prime is 163558403599. The next prime is 163558403633. The reversal of 163558403623 is 326304855361.

163558403623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 163558403623 - 2⁹ = 163558403111 is a prime.

It is a super-2 number, since 2×163558403623² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163558403633) 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, 81779201811 + 81779201812.

It is an arithmetic number, because the mean of its divisors is an integer number (81779201812).

Almost surely, 2^163558403623 is an apocalyptic number.

163558403623 is a deficient number, since it is larger than the sum of its proper divisors (1).

163558403623 is an equidigital number, since it uses as much as digits as its factorization.

163558403623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1555200, while the sum is 46.

The spelling of 163558403623 in words is "one hundred sixty-three billion, five hundred fifty-eight million, four hundred three thousand, six hundred twenty-three".