66927119616 has 540 divisors, whose sum is σ = 234017968800. Its totient is φ = 18968463360.

The previous prime is 66927119587. The next prime is 66927119621. The reversal of 66927119616 is 61691172966.

It is a happy number.

66927119616 is a `hidden beast` number, since 6 + 6 + 9 + 2 + 7 + 1 + 19 + 616 = 666.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 202196571 + ... + 202196901.

Almost surely, 2^66927119616 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 66927119616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117008984400).

66927119616 is an abundant number, since it is smaller than the sum of its proper divisors (167090849184).

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

66927119616 is a wasteful number, since it uses less digits than its factorization.

66927119616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572 (or 542 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 54.

The spelling of 66927119616 in words is "sixty-six billion, nine hundred twenty-seven million, one hundred nineteen thousand, six hundred sixteen".