66933027540 has 96 divisors (see below), whose sum is σ = 209223342720. Its totient is φ = 17764185600.

The previous prime is 66933027503. The next prime is 66933027541. The reversal of 66933027540 is 4572033966.

66933027540 is a `hidden beast` number, since 6 + 6 + 9 + 330 + 275 + 40 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66933027541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 179781 + ... + 407660.

It is an arithmetic number, because the mean of its divisors is an integer number (2179409820).

Almost surely, 2^66933027540 is an apocalyptic number.

66933027540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66933027540 is an abundant number, since it is smaller than the sum of its proper divisors (142290315180).

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

66933027540 is a wasteful number, since it uses less digits than its factorization.

66933027540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587670 (or 587662 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 45.

The spelling of 66933027540 in words is "sixty-six billion, nine hundred thirty-three million, twenty-seven thousand, five hundred forty".