66346650356 has 96 divisors (see below), whose sum is σ = 139649287680. Its totient is φ = 26966016000.

The previous prime is 66346650269. The next prime is 66346650473. The reversal of 66346650356 is 65305664366.

It is a super-2 number, since 2×66346650356² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41439956 + ... + 41441556.

It is an arithmetic number, because the mean of its divisors is an integer number (1454680080).

Almost surely, 2^66346650356 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 66346650356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69824643840).

66346650356 is an abundant number, since it is smaller than the sum of its proper divisors (73302637324).

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

66346650356 is a wasteful number, since it uses less digits than its factorization.

66346650356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2145 (or 2143 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 50.

The spelling of 66346650356 in words is "sixty-six billion, three hundred forty-six million, six hundred fifty thousand, three hundred fifty-six".