66314111656 has 64 divisors (see below), whose sum is σ = 137604055680. Its totient is φ = 29761655040.

The previous prime is 66314111653. The next prime is 66314111701. The reversal of 66314111656 is 65611141366.

It is a super-2 number, since 2×66314111656² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66314111653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8196045 + ... + 8204131.

It is an arithmetic number, because the mean of its divisors is an integer number (2150063370).

Almost surely, 2^66314111656 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 66314111656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68802027840).

66314111656 is an abundant number, since it is smaller than the sum of its proper divisors (71289944024).

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

66314111656 is a wasteful number, since it uses less digits than its factorization.

66314111656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10274 (or 10270 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The spelling of 66314111656 in words is "sixty-six billion, three hundred fourteen million, one hundred eleven thousand, six hundred fifty-six".