66093840000 has 640 divisors, whose sum is σ = 250648516800. Its totient is φ = 17127936000.

The previous prime is 66093839989. The next prime is 66093840019. The reversal of 66093840000 is 4839066.

66093840000 is a `hidden beast` number, since 6 + 609 + 3 + 8 + 40 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 79919587 + ... + 79920413.

Almost surely, 2^66093840000 is an apocalyptic number.

66093840000 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 66093840000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125324258400).

66093840000 is an abundant number, since it is smaller than the sum of its proper divisors (184554676800).

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

66093840000 is an equidigital number, since it uses as much as digits as its factorization.

66093840000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907 (or 874 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 66093840000 in words is "sixty-six billion, ninety-three million, eight hundred forty thousand".