66074550000 has 120 divisors (see below), whose sum is σ = 213352563312. Its totient is φ = 17619840000.

The previous prime is 66074549999. The next prime is 66074550109. The reversal of 66074550000 is 5547066.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

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, 70249 + ... + 370248.

Almost surely, 2^66074550000 is an apocalyptic number.

66074550000 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 66074550000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106676281656).

66074550000 is an abundant number, since it is smaller than the sum of its proper divisors (147278013312).

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

66074550000 is an equidigital number, since it uses as much as digits as its factorization.

66074550000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440533 (or 440507 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The spelling of 66074550000 in words is "sixty-six billion, seventy-four million, five hundred fifty thousand".