2161063424 has 80 divisors (see below), whose sum is σ = 4764070080. Its totient is φ = 972963840.

The previous prime is 2161063391. The next prime is 2161063433. The reversal of 2161063424 is 4243601612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268937 + ... + 276855.

It is an arithmetic number, because the mean of its divisors is an integer number (59550876).

Almost surely, 2^2161063424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2161063424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2382035040).

2161063424 is an abundant number, since it is smaller than the sum of its proper divisors (2603006656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2161063424 is an equidigital number, since it uses as much as digits as its factorization.

2161063424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7991 (or 7975 counting only the distinct ones).

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

The square root of 2161063424 is about 46487.2393673791. The cubic root of 2161063424 is about 1292.8729160259.

The spelling of 2161063424 in words is "two billion, one hundred sixty-one million, sixty-three thousand, four hundred twenty-four".