163338030881 has 2 divisors, whose sum is σ = 163338030882. Its totient is φ = 163338030880.

The previous prime is 163338030767. The next prime is 163338030899. The reversal of 163338030881 is 188030833361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152178010000 + 11160020881 = 390100^2 + 105641^2 .

It is a cyclic number.

It is not a de Polignac number, because 163338030881 - 2²² = 163333836577 is a prime.

It is a super-2 number, since 2×163338030881² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (163338030181) 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, 81669015440 + 81669015441.

It is an arithmetic number, because the mean of its divisors is an integer number (81669015441).

Almost surely, 2^163338030881 is an apocalyptic number.

It is an amenable number.

163338030881 is a deficient number, since it is larger than the sum of its proper divisors (1).

163338030881 is an equidigital number, since it uses as much as digits as its factorization.

163338030881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 163338030881 in words is "one hundred sixty-three billion, three hundred thirty-eight million, thirty thousand, eight hundred eighty-one".