2161063423 has 4 divisors (see below), whose sum is σ = 2191501008. Its totient is φ = 2130625840.

The previous prime is 2161063391. The next prime is 2161063433. The reversal of 2161063423 is 3243601612.

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

It is a cyclic number.

It is not a de Polignac number, because 2161063423 - 2⁵ = 2161063391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2161063391 and 2161063400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161063433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15218686 + ... + 15218827.

It is an arithmetic number, because the mean of its divisors is an integer number (547875252).

Almost surely, 2^2161063423 is an apocalyptic number.

2161063423 is a deficient number, since it is larger than the sum of its proper divisors (30437585).

2161063423 is an equidigital number, since it uses as much as digits as its factorization.

2161063423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30437584.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 2161063423 is about 46487.2393566234. The cubic root of 2161063423 is about 1292.8729158265.

The spelling of 2161063423 in words is "two billion, one hundred sixty-one million, sixty-three thousand, four hundred twenty-three".