66389059100 has 288 divisors, whose sum is σ = 184499441280. Its totient is φ = 20167741440.

The previous prime is 66389059027. The next prime is 66389059153. The reversal of 66389059100 is 195098366.

66389059100 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 95 ways as a sum of consecutive naturals, for example, 51987662 + ... + 51988938.

It is an arithmetic number, because the mean of its divisors is an integer number (640623060).

Almost surely, 2^66389059100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66389059100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92249720640).

66389059100 is an abundant number, since it is smaller than the sum of its proper divisors (118110382180).

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

66389059100 is a wasteful number, since it uses less digits than its factorization.

66389059100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537 (or 1530 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 47.

The spelling of 66389059100 in words is "sixty-six billion, three hundred eighty-nine million, fifty-nine thousand, one hundred".