2143566120 has 32 divisors (see below), whose sum is σ = 6430698720. Its totient is φ = 571617600.

The previous prime is 2143566109. The next prime is 2143566143. The reversal of 2143566120 is 216653412.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 8931406 + ... + 8931645.

It is an arithmetic number, because the mean of its divisors is an integer number (200959335).

Almost surely, 2^2143566120 is an apocalyptic number.

2143566120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143566120 is an abundant number, since it is smaller than the sum of its proper divisors (4287132600).

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

2143566120 is a wasteful number, since it uses less digits than its factorization.

2143566120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17863065 (or 17863061 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 2143566120 is about 46298.6621836960. The cubic root of 2143566120 is about 1289.3741570911.

The spelling of 2143566120 in words is "two billion, one hundred forty-three million, five hundred sixty-six thousand, one hundred twenty".