2123443578 has 16 divisors (see below), whose sum is σ = 4247508096. Its totient is φ = 707711040.

The previous prime is 2123443561. The next prime is 2123443601. The reversal of 2123443578 is 8753443212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26850 + ... + 70482.

It is an arithmetic number, because the mean of its divisors is an integer number (265469256).

Almost surely, 2^2123443578 is an apocalyptic number.

2123443578 is an abundant number, since it is smaller than the sum of its proper divisors (2124064518).

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

2123443578 is a wasteful number, since it uses less digits than its factorization.

2123443578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51749.

The product of its digits is 161280, while the sum is 39.

The square root of 2123443578 is about 46080.8374272864. The cubic root of 2123443578 is about 1285.3268363722.

The spelling of 2123443578 in words is "two billion, one hundred twenty-three million, four hundred forty-three thousand, five hundred seventy-eight".