665045514860 has 24 divisors (see below), whose sum is σ = 1397075798160. Its totient is φ = 265926736064.

The previous prime is 665045514803. The next prime is 665045514941. The reversal of 665045514860 is 68415540566.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 665045514799 and 665045514808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5657234 + ... + 5773593.

It is an arithmetic number, because the mean of its divisors is an integer number (58211491590).

Almost surely, 2^665045514860 is an apocalyptic number.

It is an amenable number.

665045514860 is an abundant number, since it is smaller than the sum of its proper divisors (732030283300).

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

665045514860 is a wasteful number, since it uses less digits than its factorization.

665045514860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11433745 (or 11433743 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 50.

The spelling of 665045514860 in words is "six hundred sixty-five billion, forty-five million, five hundred fourteen thousand, eight hundred sixty".