161358163403 has 2 divisors, whose sum is σ = 161358163404. Its totient is φ = 161358163402.

The previous prime is 161358163387. The next prime is 161358163481. The reversal of 161358163403 is 304361853161.

161358163403 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 an emirp because it is prime and its reverse (304361853161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161358163403 - 2⁴ = 161358163387 is a prime.

It is not a weakly prime, because it can be changed into another prime (161358163003) 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, 80679081701 + 80679081702.

It is an arithmetic number, because the mean of its divisors is an integer number (80679081702).

Almost surely, 2^161358163403 is an apocalyptic number.

161358163403 is a deficient number, since it is larger than the sum of its proper divisors (1).

161358163403 is an equidigital number, since it uses as much as digits as its factorization.

161358163403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 161358163403 in words is "one hundred sixty-one billion, three hundred fifty-eight million, one hundred sixty-three thousand, four hundred three".