6604506225540 has 72 divisors (see below), whose sum is σ = 20033892879000. Its totient is φ = 1761181968384.

The previous prime is 6604506225481. The next prime is 6604506225601. The reversal of 6604506225540 is 455226054066.

6604506225540 is a `hidden beast` number, since 6 + 6 + 0 + 45 + 0 + 62 + 2 + 5 + 540 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1219730283396 + 5384775942144 = 1104414^2 + 2320512^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23575572 + ... + 23854068.

Almost surely, 2^{6604506225540} is an apocalyptic number.

6604506225540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6604506225540 is an abundant number, since it is smaller than the sum of its proper divisors (13429386653460).

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

6604506225540 is a wasteful number, since it uses less digits than its factorization.

6604506225540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410261 (or 410256 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 45.

The spelling of 6604506225540 in words is "six trillion, six hundred four billion, five hundred six million, two hundred twenty-five thousand, five hundred forty".