2161624223 has 12 divisors (see below), whose sum is σ = 2393361600. Its totient is φ = 1950754080.

The previous prime is 2161624219. The next prime is 2161624247. The reversal of 2161624223 is 3224261612.

2161624223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2161624223 - 2² = 2161624219 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 (2161626223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48623 + ... + 81776.

It is an arithmetic number, because the mean of its divisors is an integer number (199446800).

Almost surely, 2^2161624223 is an apocalyptic number.

2161624223 is a deficient number, since it is larger than the sum of its proper divisors (231737377).

2161624223 is a wasteful number, since it uses less digits than its factorization.

2161624223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130558 (or 130547 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 2161624223 is about 46493.2707281387. The cubic root of 2161624223 is about 1292.9847404673.

Adding to 2161624223 its reverse (3224261612), we get a palindrome (5385885835).

The spelling of 2161624223 in words is "two billion, one hundred sixty-one million, six hundred twenty-four thousand, two hundred twenty-three".