660543255504 has 60 divisors (see below), whose sum is σ = 2016658580352. Its totient is φ = 200164622400.

The previous prime is 660543255487. The next prime is 660543255539. The reversal of 660543255504 is 405552345066.

660543255504 is a `hidden beast` number, since 6 + 6 + 0 + 543 + 2 + 55 + 50 + 4 = 666.

660543255504 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 660543255504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 208503232 + ... + 208506399.

Almost surely, 2^660543255504 is an apocalyptic number.

It is an amenable number.

660543255504 is an abundant number, since it is smaller than the sum of its proper divisors (1356115324848).

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

660543255504 is a wasteful number, since it uses less digits than its factorization.

660543255504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417009656 (or 417009647 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 45.

The spelling of 660543255504 in words is "six hundred sixty billion, five hundred forty-three million, two hundred fifty-five thousand, five hundred four".