163216642403 has 2 divisors, whose sum is σ = 163216642404. Its totient is φ = 163216642402.

The previous prime is 163216642399. The next prime is 163216642409. The reversal of 163216642403 is 304246612361.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 163216642403 - 2² = 163216642399 is a prime.

It is a super-2 number, since 2×163216642403² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (163216642409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81608321201 + 81608321202.

It is an arithmetic number, because the mean of its divisors is an integer number (81608321202).

Almost surely, 2^163216642403 is an apocalyptic number.

163216642403 is a deficient number, since it is larger than the sum of its proper divisors (1).

163216642403 is an equidigital number, since it uses as much as digits as its factorization.

163216642403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 38.

The spelling of 163216642403 in words is "one hundred sixty-three billion, two hundred sixteen million, six hundred forty-two thousand, four hundred three".