163624272257 has 4 divisors (see below), whose sum is σ = 172236076080. Its totient is φ = 155012468436.

The previous prime is 163624272221. The next prime is 163624272263. The reversal of 163624272257 is 752272426361.

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.

It is a cyclic number.

It is not a de Polignac number, because 163624272257 - 2¹⁰ = 163624271233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163624272277) 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, 4305901883 + ... + 4305901920.

It is an arithmetic number, because the mean of its divisors is an integer number (43059019020).

Almost surely, 2^163624272257 is an apocalyptic number.

It is an amenable number.

163624272257 is a deficient number, since it is larger than the sum of its proper divisors (8611803823).

163624272257 is an equidigital number, since it uses as much as digits as its factorization.

163624272257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8611803822.

The product of its digits is 1693440, while the sum is 47.

The spelling of 163624272257 in words is "one hundred sixty-three billion, six hundred twenty-four million, two hundred seventy-two thousand, two hundred fifty-seven".