66227026896 has 200 divisors, whose sum is σ = 203005560384. Its totient is φ = 20800074240.

The previous prime is 66227026891. The next prime is 66227026897. The reversal of 66227026896 is 69862072266.

66227026896 is a `hidden beast` number, since 6 + 622 + 7 + 0 + 2 + 6 + 8 + 9 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66227026891) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1980556 + ... + 2013716.

Almost surely, 2^66227026896 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 66227026896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101502780192).

66227026896 is an abundant number, since it is smaller than the sum of its proper divisors (136778533488).

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

66227026896 is a wasteful number, since it uses less digits than its factorization.

66227026896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33271 (or 33256 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 66227026896 in words is "sixty-six billion, two hundred twenty-seven million, twenty-six thousand, eight hundred ninety-six".