866880725504 has 40 divisors (see below), whose sum is σ = 1732525301760. Its totient is φ = 433326007296.

The previous prime is 866880725449. The next prime is 866880725573. The reversal of 866880725504 is 405527088668.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1735937 + ... + 2178815.

It is an arithmetic number, because the mean of its divisors is an integer number (43313132544).

Almost surely, 2^866880725504 is an apocalyptic number.

It is an amenable number.

866880725504 is a deficient number, since it is larger than the sum of its proper divisors (865644576256).

866880725504 is an equidigital number, since it uses as much as digits as its factorization.

866880725504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446720 (or 446704 counting only the distinct ones).

The product of its (nonzero) digits is 25804800, while the sum is 59.

The spelling of 866880725504 in words is "eight hundred sixty-six billion, eight hundred eighty million, seven hundred twenty-five thousand, five hundred four".