66050910840 has 64 divisors (see below), whose sum is σ = 198556479360. Its totient is φ = 17577687680.

The previous prime is 66050910839. The next prime is 66050910847. The reversal of 66050910840 is 4801905066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66050910847) 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 15 ways as a sum of consecutive naturals, for example, 501594 + ... + 619433.

It is an arithmetic number, because the mean of its divisors is an integer number (3102444990).

Almost surely, 2^66050910840 is an apocalyptic number.

66050910840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66050910840 is an abundant number, since it is smaller than the sum of its proper divisors (132505568520).

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

66050910840 is a wasteful number, since it uses less digits than its factorization.

66050910840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121532 (or 1121528 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 66050910840 in words is "sixty-six billion, fifty million, nine hundred ten thousand, eight hundred forty".