66060000540 has 144 divisors (see below), whose sum is σ = 206025980160. Its totient is φ = 17120885760.

The previous prime is 66060000499. The next prime is 66060000541. The reversal of 66060000540 is 4500006066.

66060000540 is a `hidden beast` number, since 6 + 6 + 0 + 600 + 0 + 0 + 54 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66060000541) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6595056 + ... + 6605064.

Almost surely, 2^66060000540 is an apocalyptic number.

66060000540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66060000540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103012990080).

66060000540 is an abundant number, since it is smaller than the sum of its proper divisors (139965979620).

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

66060000540 is a wasteful number, since it uses less digits than its factorization.

66060000540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11052 (or 11047 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The spelling of 66060000540 in words is "sixty-six billion, sixty million, five hundred forty", and thus it is an aban number.