163453542442 has 4 divisors (see below), whose sum is σ = 245180313666. Its totient is φ = 81726771220.

The previous prime is 163453542431. The next prime is 163453542449. The reversal of 163453542442 is 244245354361.

163453542442 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 133479891801 + 29973650641 = 365349^2 + 173129^2 .

It is not an unprimeable number, because it can be changed into a prime (163453542449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40863385609 + ... + 40863385612.

Almost surely, 2^163453542442 is an apocalyptic number.

163453542442 is a deficient number, since it is larger than the sum of its proper divisors (81726771224).

163453542442 is an equidigital number, since it uses as much as digits as its factorization.

163453542442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81726771223.

The product of its digits is 1382400, while the sum is 43.

The spelling of 163453542442 in words is "one hundred sixty-three billion, four hundred fifty-three million, five hundred forty-two thousand, four hundred forty-two".