66246341646 has 16 divisors (see below), whose sum is σ = 132697471104. Its totient is φ = 22047982584.

The previous prime is 66246341641. The next prime is 66246341669. The reversal of 66246341646 is 64614364266.

It is a junction number, because it is equal to n+sod(n) for n = 66246341595 and 66246341604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66246341641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8528620 + ... + 8536383.

It is an arithmetic number, because the mean of its divisors is an integer number (8293591944).

Almost surely, 2^66246341646 is an apocalyptic number.

66246341646 is an abundant number, since it is smaller than the sum of its proper divisors (66451129458).

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

66246341646 is a wasteful number, since it uses less digits than its factorization.

66246341646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17065655.

The product of its digits is 2985984, while the sum is 48.

The spelling of 66246341646 in words is "sixty-six billion, two hundred forty-six million, three hundred forty-one thousand, six hundred forty-six".