163075442237 has 4 divisors (see below), whose sum is σ = 170165678880. Its totient is φ = 155985205596.

The previous prime is 163075442213. The next prime is 163075442269. The reversal of 163075442237 is 732244570361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 732244570361 = 337 ⋅2172832553.

It is a cyclic number.

It is not a de Polignac number, because 163075442237 - 2²⁰ = 163074393661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163075442287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3545118287 + ... + 3545118332.

It is an arithmetic number, because the mean of its divisors is an integer number (42541419720).

Almost surely, 2^163075442237 is an apocalyptic number.

It is an amenable number.

163075442237 is a deficient number, since it is larger than the sum of its proper divisors (7090236643).

163075442237 is an equidigital number, since it uses as much as digits as its factorization.

163075442237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7090236642.

The product of its (nonzero) digits is 846720, while the sum is 44.

The spelling of 163075442237 in words is "one hundred sixty-three billion, seventy-five million, four hundred forty-two thousand, two hundred thirty-seven".