163015643423 has 8 divisors (see below), whose sum is σ = 167169136176. Its totient is φ = 158870603200.

The previous prime is 163015643393. The next prime is 163015643431. The reversal of 163015643423 is 324346510361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 163015643423 - 2²⁸ = 162747207967 is a prime.

It is a super-2 number, since 2×163015643423² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163015643443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2074061 + ... + 2151222.

It is an arithmetic number, because the mean of its divisors is an integer number (20896142022).

Almost surely, 2^163015643423 is an apocalyptic number.

163015643423 is a deficient number, since it is larger than the sum of its proper divisors (4153492753).

163015643423 is an equidigital number, since it uses as much as digits as its factorization.

163015643423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4226265.

The product of its (nonzero) digits is 155520, while the sum is 38.

The spelling of 163015643423 in words is "one hundred sixty-three billion, fifteen million, six hundred forty-three thousand, four hundred twenty-three".