163450511621443 has 4 divisors (see below), whose sum is σ = 170557055605008. Its totient is φ = 156343967637880.

The previous prime is 163450511621417. The next prime is 163450511621471. The reversal of 163450511621443 is 344126115054361.

163450511621443 is digitally balanced in base 2, 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163450511621443 is a prime.

It is a super-2 number, since 2×163450511621443² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163450511621393 and 163450511621402.

It is not an unprimeable number, because it can be changed into a prime (163450511621483) 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, 3553271991748 + ... + 3553271991793.

It is an arithmetic number, because the mean of its divisors is an integer number (42639263901252).

Almost surely, 2^{163450511621443} is an apocalyptic number.

163450511621443 is a deficient number, since it is larger than the sum of its proper divisors (7106543983565).

163450511621443 is an equidigital number, since it uses as much as digits as its factorization.

163450511621443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7106543983564.

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 163450511621443 in words is "one hundred sixty-three trillion, four hundred fifty billion, five hundred eleven million, six hundred twenty-one thousand, four hundred forty-three".