2166560432 has 20 divisors (see below), whose sum is σ = 4213324080. Its totient is φ = 1079251008.

The previous prime is 2166560369. The next prime is 2166560467. The reversal of 2166560432 is 2340656612.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2166560392 and 2166560401.

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 3 ways as a sum of consecutive naturals, for example, 247388 + ... + 255995.

It is an arithmetic number, because the mean of its divisors is an integer number (210666204).

Almost surely, 2^2166560432 is an apocalyptic number.

It is an amenable number.

2166560432 is a deficient number, since it is larger than the sum of its proper divisors (2046763648).

2166560432 is a wasteful number, since it uses less digits than its factorization.

2166560432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503660 (or 503654 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 2166560432 is about 46546.3256552008. The cubic root of 2166560432 is about 1293.9681970673.

The spelling of 2166560432 in words is "two billion, one hundred sixty-six million, five hundred sixty thousand, four hundred thirty-two".