66678573300 has 72 divisors (see below), whose sum is σ = 193215779232. Its totient is φ = 17754000000.

The previous prime is 66678573277. The next prime is 66678573319. The reversal of 66678573300 is 337587666.

It is a happy number.

66678573300 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 30175 + ... + 366425.

Almost surely, 2^66678573300 is an apocalyptic number.

66678573300 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 66678573300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96607889616).

66678573300 is an abundant number, since it is smaller than the sum of its proper divisors (126537205932).

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

66678573300 is a wasteful number, since it uses less digits than its factorization.

66678573300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336929 (or 336922 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 51.

The spelling of 66678573300 in words is "sixty-six billion, six hundred seventy-eight million, five hundred seventy-three thousand, three hundred".